I agree with this. While Dark is a great monotype, the resurgence of fighting/bugs types really puts a damper on them. Furthermore, there is the new fairy type to contend with. While you may have Bisharp to counter that, a togekiss coming in can OHKO you with Aura Sphere. I would say balanced Dark fits nicely into Mid tier. But I wouldn't go as far to say it's high tier material.
Former I am going to have to disagree with you there, here is why Mandibuzz it just walls everything
For Bug
Vs Heracross
252+ Atk Heracross Close Combat vs. 252 HP / 252+ Def Mandibuzz: 145-172 (34.1 - 40.5%) -- 50.5% chance to 3HKO after Leftovers recovery
252+ Atk Heracross Rock Slide vs. 252 HP / 252+ Def Mandibuzz: 124-146 (29.2 - 34.4%) -- 99.8% chance to 4HKO after Leftovers recovery
252+ Atk Heracross Megahorn vs. 252 HP / 252+ Def Mandibuzz: 145-172 (34.1 - 40.5%) -- 50.5% chance to 3HKO after Leftovers recovery
252+ Atk Heracross Stone Edge vs. 252 HP / 252+ Def Mandibuzz: 162-192 (38.2 - 45.2%) -- guaranteed 3HKO after Leftovers recovery
4 Atk Mandibuzz Foul Play vs. 4 HP / 0 Def Heracross: 105-124 (34.7 - 41%) -- guaranteed 3HKO
Vs Scizor-Mega
252+ Atk Technician Mega Scizor Bullet Punch vs. 252 HP / 252+ Def Mandibuzz: 84-100 (19.8 - 23.5%) -- possible 6HKO after Leftovers recovery
252+ Atk Technician Mega Scizor Bug Bite vs. 252 HP / 252+ Def Mandibuzz: 126-148 (29.7 - 34.9%) -- guaranteed 4HKO after Leftovers recovery
252+ Atk Mega Scizor U-turn vs. 252 HP / 252+ Def Mandibuzz: 97-115 (22.8 - 27.1%) -- possible 5HKO after Leftovers recovery
252+ Atk Mega Scizor Superpower vs. 252 HP / 252+ Def Mandibuzz: 112-132 (26.4 - 31.1%) -- 12% chance to 4HKO after Leftovers recovery
4 Atk Mandibuzz Foul Play vs. 252 HP / 0 Def Mega Scizor: 142-168 (41.2 - 48.8%) -- guaranteed 3HKO
Vs Durant
252 Atk Hustle Durant Iron Head vs. 252 HP / 252+ Def Mandibuzz: 121-144 (28.5 - 33.9%) -- 98.1% chance to 4HKO after Leftovers recovery
252 Atk Hustle Durant X-Scissor vs. 252 HP / 252+ Def Mandibuzz: 121-144 (28.5 - 33.9%) -- 98.1% chance to 4HKO after Leftovers recovery
252 Atk Hustle Durant Stone Edge vs. 252 HP / 252+ Def Mandibuzz: 202-238 (47.6 - 56.1%) -- 25.8% chance to 2HKO after Leftovers recovery
252 Atk Hustle Durant Rock Slide vs. 252 HP / 252+ Def Mandibuzz: 152-180 (35.8 - 42.4%) -- 93.5% chance to 3HKO after Leftovers recovery
4 Atk Mandibuzz Foul Play vs. 4 HP / 0 Def Durant: 126-148 (48.8 - 57.3%) -- 95.3% chance to 2HKO
Vs Pinsir-Mega
252+ Atk Aerilate Mega Pinsir Quick Attack vs. 252 HP / 252+ Def Mandibuzz: 75-88 (17.6 - 20.7%) -- possible 7HKO after Leftovers recovery
252+ Atk Aerilate Mega Pinsir Return vs. 252 HP / 252+ Def Mandibuzz: 189-223 (44.5 - 52.5%) -- guaranteed 3HKO after Leftovers recovery
252+ Atk Mega Pinsir Close Combat vs. 252 HP / 252+ Def Mandibuzz: 114-135 (26.8 - 31.8%) -- 37.8% chance to 4HKO after Leftovers recovery
252+ Atk Mega Pinsir X-Scissor vs. 252 HP / 252+ Def Mandibuzz: 115-136 (27.1 - 32%) -- 49.7% chance to 4HKO after Leftovers recovery
4 Atk Mandibuzz Foul Play vs. 4 HP / 0 Def Mega Pinsir: 153-180 (56.2 - 66.1%) -- guaranteed 2HKO
Vs Scoilpede
4 Atk Scolipede Rock Slide vs. 252 HP / 252+ Def Mandibuzz: 78-92 (18.3 - 21.6%) -- possible 7HKO after Leftovers recovery
4 Atk Scolipede Megahorn vs. 252 HP / 252+ Def Mandibuzz: 91-108 (21.4 - 25.4%) -- possible 5HKO after Leftovers recovery
4 Atk Mandibuzz Foul Play vs. 252 HP / 0 Def Scolipede: 114-135 (35.1 - 41.6%) -- guaranteed 3HKO
Vs Escavalier
252+ Atk Escavalier Iron Head vs. 252 HP / 252+ Def Mandibuzz: 103-123 (24.2 - 29%) -- possible 5HKO after Leftovers recovery
252+ Atk Escavalier Megahorn vs. 252 HP / 252+ Def Mandibuzz: 154-183 (36.3 - 43.1%) -- 97.9% chance to 3HKO after Leftovers recovery
252+ Atk Escavalier Rock Slide vs. 252 HP / 252+ Def Mandibuzz: 130-154 (30.6 - 36.3%) -- guaranteed 4HKO after Leftovers recovery
4 Atk Mandibuzz Foul Play vs. 252 HP / 0 Def Escavalier: 169-199 (49.1 - 57.8%) -- 96.9% chance to 2HKO
There is two Physical Bugs I see Viable vs Mandibuzz, and thats Armaldo, and Crustle, plus a mega
Vs Armaldo
252+ Atk Armaldo X-Scissor vs. 252 HP / 252+ Def Mandibuzz: 97-115 (22.8 - 27.1%) -- possible 5HKO after Leftovers recovery
252+ Atk Armaldo Stone Edge vs. 252 HP / 252+ Def Mandibuzz: 242-288 (57 - 67.9%) -- guaranteed 2HKO after Leftovers recovery
252+ Atk Armaldo Rock Slide vs. 252 HP / 252+ Def Mandibuzz: 186-218 (43.8 - 51.4%) -- guaranteed 3HKO after Leftovers recovery
4 Atk Mandibuzz Foul Play vs. 252 HP / 0 Def Armaldo: 166-196 (46.8 - 55.3%) -- 16.4% chance to 2HKO after Leftovers recovery
It has the stab for rock type moves, and flinch chance on rock slide the better option
Vs Crustle
252+ Atk Crustle Stone Edge vs. 252 HP / 252+ Def Mandibuzz: 204-240 (48.1 - 56.6%) -- 32% chance to 2HKO after Leftovers recovery
252+ Atk Crustle Rock Blast (3 hits) vs. 252 HP / 252+ Def Mandibuzz: 150-186 (35.3 - 43.8%) -- approx. 98.8% chance to 3HKO after Leftovers recovery
252+ Atk Crustle X-Scissor vs. 252 HP / 252+ Def Mandibuzz: 81-96 (19.1 - 22.6%) -- possible 6HKO after Leftovers recovery
4 Atk Mandibuzz Foul Play vs. 4 HP / 0 Def Crustle: 114-135 (40.4 - 47.8%) -- guaranteed 3HKO
This is without the sturdy, shell smashing, white herb
+2 252+ Atk Crustle Stone Edge vs. 252 HP / 252+ Def Mandibuzz: 404-476 (95.2 - 112.2%) -- 68.8% chance to OHKO
+2 252+ Atk Crustle Rock Blast (3 hits) vs. 252 HP / 252+ Def Mandibuzz: 306-366 (72.1 - 86.3%) -- guaranteed 2HKO after Leftovers recovery
+2 252+ Atk Crustle X-Scissor vs. 252 HP / 252+ Def Mandibuzz: 160-190 (37.7 - 44.8%) -- guaranteed 3HKO after Leftovers recovery
The Shell smash helps, but Overall Armaldo is a better option.
There is a third option but it takes up a mega slot
Vs Heracross-Mega
252+ Atk Mega Heracross Rock Blast (5 hits) vs. 252 HP / 252+ Def Mandibuzz: 280-330 (66 - 77.8%) -- guaranteed 2HKO after Leftovers recovery
252+ Atk Mega Heracross Pin Missile (5 hits) vs. 252 HP / 252+ Def Mandibuzz: 210-245 (49.5 - 57.7%) -- approx. 63.3% chance to 2HKO after Leftovers recovery
252+ Atk Mega Heracross Close Combat vs. 252 HP / 252+ Def Mandibuzz: 196-232 (46.2 - 54.7%) -- 8.6% chance to 2HKO after Leftovers recovery
For Fighting
I don't really play fighting that much, I know what people run on it
Vs Hawlucha
252+ Atk Hawlucha High Jump Kick vs. 252 HP / 252+ Def Mandibuzz: 129-153 (30.4 - 36%) -- guaranteed 4HKO after Leftovers recovery
252+ Atk Hawlucha Acrobatics (110 BP) vs. 252 HP / 252+ Def Mandibuzz: 109-129 (25.7 - 30.4%) -- 1% chance to 4HKO after Leftovers recovery
252+ Atk Hawlucha Sky Attack vs. 252 HP / 252+ Def Mandibuzz: 138-163 (32.5 - 38.4%) -- 2.6% chance to 3HKO after Leftovers recovery
4 Atk Mandibuzz Foul Play vs. 4 HP / 0 Def Hawlucha: 85-101 (28.5 - 33.8%) -- 0.7% chance to 3HKO
Vs Infernape
252 Atk Life Orb Infernape Close Combat vs. 252 HP / 252+ Def Mandibuzz: 153-181 (36 - 42.6%) -- 93.2% chance to 3HKO after Leftovers recovery
252 Atk Life Orb Iron Fist Infernape Mach Punch vs. 252 HP / 252+ Def Mandibuzz: 62-74 (14.6 - 17.4%) -- possible 9HKO after Leftovers recovery
252 Atk Life Orb Infernape Flare Blitz vs. 252 HP / 252+ Def Mandibuzz: 153-181 (36 - 42.6%) -- 93.2% chance to 3HKO after Leftovers recovery
252 Atk Life Orb Iron Fist Infernape Thunder Punch vs. 252 HP / 252+ Def Mandibuzz: 153-182 (36 - 42.9%) -- 96.3% chance to 3HKO after Leftovers recovery
252 Atk Life Orb Infernape Rock Slide vs. 252 HP / 252+ Def Mandibuzz: 130-153 (30.6 - 36%) -- guaranteed 4HKO after Leftovers recovery
252 Atk Life Orb Infernape Stone Edge vs. 252 HP / 252+ Def Mandibuzz: 172-203 (40.5 - 47.8%) -- guaranteed 3HKO after Leftovers recovery
4 Atk Mandibuzz Foul Play vs. 0 HP / 0 Def Infernape: 88-104 (30 - 35.4%) -- 26.6% chance to 3HKO
Vs Lucario
252 Atk Lucario Close Combat vs. 252 HP / 252+ Def Mandibuzz: 121-144 (28.5 - 33.9%) -- 98.1% chance to 4HKO after Leftovers recovery
252 Atk Lucario Bullet Punch vs. 252 HP / 252+ Def Mandibuzz: 42-49 (9.9 - 11.5%) -- possibly the worst move ever
4 Atk Mandibuzz Foul Play vs. 0 HP / 0 Def Lucario: 93-109 (33 - 38.7%) -- 99.8% chance to 3HKO
Lucario is kind of wierd when it comes to this because of Justified getting +1 per foul play
+1 252 Atk Lucario Close Combat vs. 252 HP / 252+ Def Mandibuzz: 183-216 (43.1 - 50.9%) -- guaranteed 3HKO after Leftovers recovery
+1 252 Atk Lucario Bullet Punch vs. 252 HP / 252+ Def Mandibuzz: 61-73 (14.3 - 17.2%) -- possible 9HKO after Leftovers recovery
+1 4 Atk Mandibuzz Foul Play vs. 0 HP / 0 Def Lucario: 138-163 (49.1 - 58%) -- 97.7% chance to 2HKO
Vs Breloom
252 Atk Life Orb Technician Breloom Mach Punch vs. 252 HP / 252+ Def Mandibuzz: 90-107 (21.2 - 25.2%) -- possible 5HKO after Leftovers recovery
252 Atk Life Orb Technician Breloom Rock Tomb vs. 252 HP / 252+ Def Mandibuzz: 179-213 (42.2 - 50.2%) -- guaranteed 3HKO after Leftovers recovery
Overcoat wrecks Spore Technician Breloom
If it gets the SD boost its a lot harder to deal with
+2 252 Atk Life Orb Technician Breloom Mach Punch vs. 252 HP / 252+ Def Mandibuzz: 177-211 (41.7 - 49.7%) -- guaranteed 3HKO after Leftovers recovery
+2 252 Atk Life Orb Technician Breloom Rock Tomb vs. 252 HP / 252+ Def Mandibuzz: 356-421 (83.9 - 99.2%) -- guaranteed 2HKO after Leftovers recovery
+2 4 Atk Mandibuzz Foul Play vs. 4 HP / 0 Def Breloom: 186-220 (70.9 - 83.9%) -- guaranteed 2HKO
Vs Conkeldurr
252+ Atk Conkeldurr Ice Punch vs. 252 HP / 252+ Def Mandibuzz: 134-158 (31.6 - 37.2%) -- guaranteed 4HKO after Leftovers recovery
252+ Atk Conkeldurr Mach Punch vs. 252 HP / 252+ Def Mandibuzz: 54-64 (12.7 - 15%) -- possibly the worst move ever
252+ Atk Conkeldurr Drain Punch vs. 252 HP / 252+ Def Mandibuzz: 100-118 (23.5 - 27.8%) -- possible 5HKO after Leftovers recovery
4 Atk Mandibuzz Foul Play vs. 252 HP / 0 Def Conkeldurr: 93-111 (22.4 - 26.8%) -- 30.6% chance to 4HKO
Vs Mega Medicham
252 Atk Pure Power Mega Medicham Ice Punch vs. 252 HP / 252+ Def Mandibuzz: 192-226 (45.2 - 53.3%) -- 0.4% chance to 2HKO after Leftovers recovery
252 Atk Pure Power Mega Medicham Fake Out vs. 252 HP / 252+ Def Mandibuzz: 51-61 (12 - 14.3%) -- possibly the worst move ever
252 Atk Pure Power Mega Medicham Drain Punch vs. 252 HP / 252+ Def Mandibuzz: 144-169 (33.9 - 39.8%) -- 28.4% chance to 3HKO after Leftovers recovery
252 Atk Pure Power Mega Medicham Bullet Punch vs. 252 HP / 252+ Def Mandibuzz: 51-61 (12 - 14.3%) -- possibly the worst move ever
4 Atk Mandibuzz Foul Play vs. 0 HP / 0 Def Mega Medicham: 148-175 (56.7 - 67%) -- guaranteed 2HKO
Vs Hitmonlee
252+ Atk Hitmonlee Stone Edge vs. 252 HP / 252+ Def Mandibuzz: 158-188 (37.2 - 44.3%) -- 100% chance to 3HKO after Leftovers recovery
252+ Atk Normal Gem Hitmonlee Fake Out vs. 252 HP / 252+ Def Mandibuzz: 41-49 (9.6 - 11.5%) -- possibly the worst move ever
252+ Atk Hitmonlee High Jump Kick vs. 252 HP / 252+ Def Mandibuzz: 153-181 (36 - 42.6%) -- 95.8% chance to 3HKO after Leftovers recovery
252+ Atk Hitmonlee Close Combat vs. 252 HP / 252+ Def Mandibuzz: 142-168 (33.4 - 39.6%) -- 18.9% chance to 3HKO after Leftovers recovery
4 Atk Mandibuzz Foul Play vs. 4 HP / 0 Def Hitmonlee: 134-158 (55.3 - 65.2%) -- guaranteed 2HKO
Counters for Fighting
Vs Terrakion
252 Atk Terrakion Stone Edge vs. 252 HP / 252+ Def Mandibuzz: 228-270 (53.7 - 63.6%) -- guaranteed 2HKO after Leftovers recovery
252 Atk Terrakion Close Combat vs. 252 HP / 252+ Def Mandibuzz: 136-162 (32 - 38.2%) -- 0.9% chance to 3HKO after Leftovers recovery
252 Atk Terrakion Rock Slide vs. 252 HP / 252+ Def Mandibuzz: 170-204 (40 - 48.1%) -- guaranteed 3HKO after Leftovers recovery
252 Atk Terrakion X-Scissor vs. 252 HP / 252+ Def Mandibuzz: 61-72 (14.3 - 16.9%) -- possible 9HKO after Leftovers recovery
252 Atk Terrakion Iron Head vs. 252 HP / 252+ Def Mandibuzz: 61-72 (14.3 - 16.9%) -- possible 9HKO after Leftovers recovery
The best counter because justified makes foul play help and not hinder Terrakions ability to sweep
Vs Machamp
252+ Atk Machamp Dynamic Punch vs. 252 HP / 252+ Def Mandibuzz: 126-148 (29.7 - 34.9%) -- guaranteed 4HKO after Leftovers recovery
252+ Atk Machamp Stone Edge vs. 252 HP / 252+ Def Mandibuzz: 168-198 (39.6 - 46.6%) -- guaranteed 3HKO after Leftovers recovery
252+ Atk Machamp Bullet Punch vs. 252 HP / 252+ Def Mandibuzz: 34-41 (8 - 9.6%) -- possibly the worst move ever
252+ Atk Machamp Ice Punch vs. 252 HP / 252+ Def Mandibuzz: 126-150 (29.7 - 35.3%) -- guaranteed 4HKO after Leftovers recovery
4 Atk Mandibuzz Foul Play vs. 252 HP / 0 Def Machamp: 102-121 (26.5 - 31.5%) -- 22.1% chance to 4HKO after Leftovers recovery
If your gonna ask why Machamp is down here, its because of its abilities, guts it gets more powered up with toxics that mandibuzz throws at it
And No Guard which lets Stone edge, and Dynamic Punch Perfect accuracy means you can get the confuse, and Mandibuzz can hit back
Vs Mienshao
252 Atk Life Orb Mienshao High Jump Kick vs. 252 HP / 252+ Def Mandibuzz: 187-222 (44.1 - 52.3%) -- guaranteed 3HKO after Leftovers recovery
252 Atk Life Orb Mienshao Fake Out vs. 252 HP / 252+ Def Mandibuzz: 39-47 (9.1 - 11%) -- possibly the worst move ever
252 Atk Life Orb Mienshao U-turn vs. 252 HP / 252+ Def Mandibuzz: 68-81 (16 - 19.1%) -- possible 8HKO after Leftovers recovery
252 Atk Life Orb Mienshao Stone Edge vs. 252 HP / 252+ Def Mandibuzz: 192-229 (45.2 - 54%) -- 3.9% chance to 2HKO after Leftovers recovery
4 Atk Mandibuzz Foul Play vs. 0 HP / 0 Def Mienshao: 114-135 (42 - 49.8%) -- guaranteed 3HKO
Mienshao, is another decent counter to mandibuzz, hitting it back hard
The problem is this is all for Mandibuzz, there is another called Sabeyle
Vs Armaldo
252+ Atk Armaldo Stone Edge vs. 252 HP / 4 Def Sableye: 220-261 (72.3 - 85.8%) -- guaranteed 2HKO after Leftovers recovery
Vs Crustle
252+ Atk Crustle Stone Edge vs. 252 HP / 4 Def Sableye: 183-216 (60.1 - 71%) -- guaranteed 2HKO after Leftovers recovery
Vs Terrakion
252 Atk Terrakion Stone Edge vs. 252 HP / 4 Def Sableye: 205-243 (67.4 - 79.9%) -- guaranteed 2HKO after Leftovers recovery
Vs Heracross-Mega
252+ Atk Mega Heracross Pin Missile (5 hits) vs. 252 HP / 4 Def Sableye: 375-440 (123.3 - 144.7%) -- guaranteed OHKO
Vs Machamp
252+ Atk Machamp Stone Edge vs. 252 HP / 4 Def Sableye: 151-178 (49.6 - 58.5%) -- 69.1% chance to 2HKO after Leftovers recovery
Vs Mienshao
252 Atk Life Orb Mienshao Stone Edge vs. 252 HP / 4 Def Sableye: 174-205 (57.2 - 67.4%) -- guaranteed 2HKO after Leftovers recovery
These calcs maybe weird because it seems it cant take the hits, but it has three things that make it perfect with Mandibuzz, Priority Burn, Priority Recover, and a fighting type immunity
Now look at these calcs after Sableye gets off the burn
Vs Armaldo
252+ Atk burned Armaldo Stone Edge vs. 252 HP / 4 Def Sableye: 110-130 (36.1 - 42.7%) -- 95.8% chance to 3HKO after Leftovers recovery
Vs Crustle
252+ Atk burned Crustle Stone Edge vs. 252 HP / 4 Def Sableye: 91-108 (29.9 - 35.5%) -- guaranteed 4HKO after Leftovers recovery
Vs Terrakion
252 Atk burned Terrakion Stone Edge vs. 252 HP / 4 Def Sableye: 102-121 (33.5 - 39.8%) -- 26.2% chance to 3HKO after Leftovers recovery
Vs Heracross-Mega
252+ Atk burned Mega Heracross Rock Blast (5 hits) vs. 252 HP / 4 Def Sableye: 125-145 (41.1 - 47.6%) -- guaranteed 3HKO after Leftovers recovery
Vs Machamp
252+ Atk burned Machamp Stone Edge vs. 252 HP / 4 Def Sableye: 75-89 (24.6 - 29.2%) -- possible 5HKO after Leftovers recovery
Vs Mienshao
252 Atk Life Orb burned Mienshao Stone Edge vs. 252 HP / 4 Def Sableye: 87-103 (28.6 - 33.8%) -- 95.9% chance to 4HKO after Leftovers recovery
Look at the difference it makes, its Insane, This is why Im nominating
Balanced Dark > High Tier
Bulky Dark > High Tier