I get that Patrick, I'm just wondering why magneton isn't getting a similar treatment
Nitpick: Magnezone have 70/115/90 bulk.
Magneton doesn't get the same treatment is because it's a lot worse at doing its job. Magneton can't stomach the attacks the walls can make, needing a lot more prediction/support than Magnezone.
bulky waters, or fairy's and Crobat
Let's look at that:
Slowbro
252+ SpA Choice Specs Magneton Volt Switch vs. 252 HP / 0 SpD Slowbro: 428-506 (108.6 - 128.4%) -- guaranteed OHKO
Slowbro can't tank either of them
4 SpA Slowbro Scald vs. 252 HP / 4 SpD Magnezone: 94-112 (27.3 - 32.5%) -- guaranteed 4HKO
4 SpA Slowbro Scald vs. 252 HP / 4 SpD Magneton: 115-136 (37.8 - 44.7%) -- guaranteed 3HKO
It's a bigger difference than you think. Let's assume slowbro scalds magneton on the switch. 2 scalds means 75.6-89.4 damage. With a single layer of spikes on both switches magneton dies. If scald get's a burn(51% chance) and magnezone switches on stealth rock, it also won't get a second attack. Killing bulky waters is magneton only niche and it can't even switch on slowbro scalds twice.
Alomomola
No relevant change
Blastoise (Mega)
252+ SpA Choice Specs Magneton Thunderbolt vs. 252 HP / 4 SpD Mega Blastoise: 404-476 (111.6 - 131.4%) -- guaranteed OHKO
252+ SpA Mega Launcher Mega Blastoise Aura Sphere vs. 252 HP / 4 SpD Magneton: 394-464 (129.6 - 152.6%) -- guaranteed OHKO
(other moves don't ohko)
Magneton might use some evs(68 plus creep vs Zone's 148) to outspeed Blastoise on a predicted spin, making it slightly better than Zone.
Suicune
4 SpA Suicune Scald vs. 252 HP / 4 SpD Magnezone: 87-103 (25.2 - 29.9%) -- guaranteed 4HKO
+1 4 SpA Suicune Scald vs. 252 HP / 4 SpD Magnezone: 129-153 (37.5 - 44.4%) -- guaranteed 3HKO
252+ SpA Choice Specs Analytic Magnezone Thunderbolt vs. +1 252 HP / 0 SpD Suicune: 372-440 (92 - 108.9%) -- 56.3% chance to OHKO
Zone can handle typical suicines.
4 SpA Suicune Scald vs. 252 HP / 4 SpD Magneton: 106-126 (34.8 - 41.4%) -- guaranteed 3HKO
If you suffer a burn or take stealth rocks damage, Magneton won't even check Crocurne again:
+1 4 SpA Suicune Scald vs. 252 HP / 4 SpD Magneton: 159-187 (52.3 - 61.5%) -- guaranteed 2HKO
Swampert
No relevant change
Empoleon
4 SpA Empoleon Scald vs. 252 HP / 4 SpD Magnezone: 103-123 (29.9 - 35.7%) -- 31.5% chance to 3HKO
4 SpA Empoleon Scald vs. 252 HP / 4 SpD Magneton: 127-150 (41.7 - 49.3%) -- guaranteed 3HKO
Again, if there are hazards or you suffer a burn, you can't switch twice.
Florges
252+ SpA Choice Specs Analytic Magneton Flash Cannon vs. 252 HP / 252+ SpD Florges: 282-332 (78.3 - 92.2%) -- guaranteed 2HKO after Leftovers recovery
4 SpA Florges Moonblast vs. 252 HP / 4 SpD Magneton: 75-89 (24.6 - 29.2%) -- 99.9% chance to 4HKO
Magneton counters Florgers well enough
Aromatisse and Crobat aren't meant to take any special wallbreakers.
Magneton can barely get past Spd Mew:
252+ SpA Choice Specs Analytic Magnezone Thunderbolt vs. 252 HP / 252+ SpD Mew: 228-268 (56.4 - 66.3%) -- guaranteed 2HKO after Leftovers recovery
252+ SpA Choice Specs Analytic Magneton Thunderbolt vs. 252 HP / 252+ SpD Mew: 214-253 (52.9 - 62.6%) -- 99.6% chance to 2HKO after Leftovers recovery
Mew can PP stall Magneton until the 10% drop. If it used wisp when Magneton switched, it might even outlast Magneton.
Anything bulkier than 100/100 without a stab weakness and with a reliable recovery can wall it.
252+ SpA Choice Specs Magneton Thunderbolt vs. 252 HP / 252+ SpD Umbreon: 138-163 (35 - 41.3%) -- 75% chance to 3HKO after Leftovers recovery
252+ SpA Choice Specs Analytic Magneton Thunderbolt vs. 252 HP / 252+ SpD Cresselia: 178-211 (40 - 47.5%) -- guaranteed 3HKO after Leftovers recovery
252+ SpA Choice Specs Analytic Magneton Thunderbolt vs. 252 HP / 252+ SpD Eviolite Porygon2: 148-175 (39.5 - 46.7%) -- guaranteed 3HKO
And of course:
252+ SpA Choice Specs Magneton Thunderbolt vs. 252 HP / 4 SpD Blissey: 177-208 (24.7 - 29.1%) -- possible 5HKO after Leftovers recovery
Blissey Seismic Toss vs. 252 HP Magneton: 100-100 (32.8 - 32.8%) -- guaranteed 3HKO after Stealth Rock
What makes Magneton more managable than Magnezone is that nearly every wall can 2hko it after a scald burn or hazard. You might add an eviolite but without specs, it can't wallbreak many things.
252+ SpA Analytic Magneton Flash Cannon vs. 252 HP / 252+ SpD Hippowdon: 156-184 (37.1 - 43.8%) -- 99.8% chance to 3HKO after Leftovers recovery
252+ SpA Analytic Magneton Thunderbolt vs. +2 252 HP / 0 SpD Suicune: 176-210 (43.5 - 51.9%) -- guaranteed 3HKO after Leftovers recovery
then
252+ SpA Analytic Magneton Thunderbolt vs. +3 252 HP / 0 SpD Suicune: 140-168 (34.6 - 41.5%) -- 69.2% chance to 3HKO after Leftovers recovery
Suicine used rest!
252+ SpA Analytic Magneton Thunderbolt vs. 252 HP / 252+ SpD Mew: 144-169 (35.6 - 41.8%) -- 84.8% chance to 3HKO after Leftovers recovery
can come in, burn you and then stall