Just to prove a point because it obviously needs to be done;
S Rank Pokemon
+1 252+ Atk Tough Claws Mega Charizard X Dragon Claw vs. 4 HP / 0 Def Greninja: 396-466 (138.4 - 162.9%) -- guaranteed OHKO
+1 252+ Atk Tough Claws Mega Charizard X Flare Blitz vs. 0 HP / 0 Def Keldeo: 234-276 (72.4 - 85.4%) -- guaranteed 2HKO
+1 252+ Atk Tough Claws Mega Charizard X Dragon Claw vs. 4 HP / 0 Def Latios: 686-810 (227.1 - 268.2%) -- guaranteed OHKO
A+ Rank Pokemon
+1 252+ Atk Mega Charizard X Earthquake vs. 228 HP / 0 Def Azumarill: 216-255 (54.2 - 64%) -- guaranteed 2HKO
+1 252+ Atk Tough Claws Mega Charizard X Flare Blitz vs. 4 HP / 0 Def Bisharp: 860-1014 (316.1 - 372.7%) -- guaranteed OHKO
+1 252+ Atk Tough Claws Mega Charizard X Dragon Claw vs. 0 HP / 4 Def Mega Charizard Y: 348-411 (117.1 - 138.3%) -- guaranteed OHKO
+1 252+ Atk Tough Claws Mega Charizard X Flare Blitz vs. 252 HP / 252+ Def Clefable: 378-445 (95.9 - 112.9%) -- 75% chance to OHKO
+1 252+ Atk Tough Claws Mega Charizard X Dragon Claw vs. 4 HP / 0 Def Mega Gallade: 436-514 (156.8 - 184.8%) -- guaranteed OHKO
+1 252+ Atk Tough Claws Mega Charizard X Dragon Claw vs. 0 HP / 0 Def Garchomp: 594-702 (166.3 - 196.6%) -- guaranteed OHKO
+1 252+ Atk Tough Claws Mega Charizard X Flare Blitz vs. 0 HP / 24 Def Mega Gardevoir: 589-694 (212.6 - 250.5%) -- guaranteed OHKO
+1 252+ Atk Tough Claws Mega Charizard X Dragon Claw vs. 28 HP / 0 Def Gengar: 432-508 (161.1 - 189.5%) -- guaranteed OHKO
+1 252+ Atk Mega Charizard X Earthquake vs. 248 HP / 0 Def Heatran: 684-808 (177.6 - 209.8%) -- guaranteed OHKO
252+ Atk Tough Claws Mega Charizard X Flare Blitz vs. 252 HP / 252+ Def Landorus-T: 222-262 (58.1 - 68.5%) -- guaranteed 2HKO after Leftovers recovery
+1 252+ Atk Tough Claws Mega Charizard X Flare Blitz vs. 0 HP / 4 Def Landorus: 468-552 (146.7 - 173%) -- guaranteed OHKO
+1 252+ Atk Tough Claws Mega Charizard X Flare Blitz vs. 4 HP / 0 Def Metagross: 686-810 (227.1 - 268.2%) -- guaranteed OHKO (Mega Charizard X also OHKOs 252 HP Mega Metagross, as well as 252 Def Mega Metagross)
+1 252+ Atk Tough Claws Mega Charizard X Flare Blitz vs. 252 HP / 0 Def Mew: 430-507 (106.4 - 125.4%) -- guaranteed OHKO
+1 252+ Atk Tough Claws Mega Charizard X Flare Blitz vs. 0 HP / 4 Def Mega Pinsir: 732-864 (270.1 - 318.8%) -- guaranteed OHKO
+1 252+ Atk Tough Claws Mega Charizard X Flare Blitz vs. 248 HP / 116 Def Mega Scizor: 1180-1392 (344 - 405.8%) -- guaranteed OHKO
+1 252+ Atk Tough Claws Mega Charizard X Dragon Claw vs. 0 HP / 4 Def Talonflame: 375-442 (126.2 - 148.8%) -- guaranteed OHKO
+1 252+ Atk Tough Claws Mega Charizard X Dragon Claw vs. 0 HP / 4 Def Thundurus: 381-448 (127.4 - 149.8%) -- guaranteed OHKO
+1 252+ Atk Tough Claws Mega Charizard X Dragon Claw vs. 252 HP / 240+ Def Mega Venusaur: 178-211 (48.9 - 57.9%) -- 97.7% chance to 2HKO
(All Mega Evolutions outside of Mega Latias/Latios, Garchomp, and banned Pokemon were used)
Now obviously Mega Charizard X is walled by a select few Pokemon in these top two tiers, but he can literally
AT LEAST 2HKO ALL OF THEM, AND HAS THE ABILITY TO OHKO 17/21 OF ALL S AND A+ POKEMON.
I'm not saying Mega Charizard X will always win these because obviously some different sets are used and some of them are potentially faster and can OHKO Mega Charizard X itself, but seriously, it can potentially 2HKO the top of this entire meta.
You don't need to spam with other calculations of Pokemon against Mega Charizard X as I already know them, but the fact that Mega Charizard X can even do this baffles me.
Oh and just saying, if you Baton Pass a +2 Atk & Spe over to Mega Charizard X using Scolipede, you don't even need to run Dragon Dance and can OHKO almost the entire meta, just something to think about. I was unsure a few days ago but seriously,
Mega Charizard X is fucking scary, S Rank.
http://replay.pokemonshowdown.com/ou-189853862
+1 252+ Atk Tough Claws Mega Charizard X Thunder Punch vs. 228 HP / 0 Def Azumarill: 432-510 (108.5 - 128.1%) -- guaranteed OHKO
+1 252+ Atk Mega Charizard X Earthquake vs. 0 HP / 4 Def Altaria: 165-195 (56.7 - 67%) -- guaranteed 2HKO
Edit: Yeah,
Lando-T for S Rank, that thing destroys so many things it isn't even funny.
Another Edit: God damn it can we stop with all the jokes, some people are trying to have a legitimate discussion.