He'll never get hit with earthquake at all because he's Fire/Flying. But that type combo renders him weak against a STAB Thunder/ Choice Spec STAB Thunderbolt. And he'll be absolutely raped by STAB Stone Edge/ STAB Rock Slide and others.
Back to the topic, I'd say Infernape, for the same reason why I think that Deoxys-Attack form is better than Deoxys-Normal form. They can both pretty much only hit hard, so you should just hit as hard as possible, which Infernape can do much better in my opinion.
oh my good man, you should check serebii, blaziken thanks to DW has obtained a permanent speed boost, which was the only thing that infernape was superior in.
from all of the five fire starter, i like charizard the best, but if i have to chose between blaziken and infernape, then i choose blaziken Blaziken: Fire Blast, Flare Blitz, Blaze Kick, Swords Dance charizard may not effect by earthquake, but he'll definitely get struck by electric (Fire/Flying), the only pokemon i know who can avoided ground and electric attack are flygon (dragon/ground, with levitate ability), but that means he's weak against ice attack,,
Typhlosion, but among those 2 I would say Infernape since a good high atk/speed infernape can overcome almost anything and infernape has got both
ok.. I just looked at serebii.net and I say, Blaziken for attack Infernape for speed For Blaziken movelist I think.. High Jump Kick Flare Blitz Thunderpunch Stone Edge If you go Infernape, since it's a speed type.. Flare Blitz Close Combat Sunny Day Solar Beam well, it's just my opinion, u can have ur own way, just search, search, and search... XD