>>27989516>YStill has a ×4 weakness to rock, which is common, but when mega evolved, it turns sunny. Although the Weather Wars is no longer a thing, Charizard has access to Solar Beam, a 1 turn attack in the sun, which takes down 2 of its weaknesses. Unfortunately, if the opponent sets up stealth rocks, and Charizard has to be put into the battlefield, it's game over.
>XLoses its ×4 weakness to rock, and its fire type makes fairy type moves do neutral damage. Even though Charizard gains a dragon typing, it unfortunately makes it weak to ground type moves and EQ is a very common move. But it does gain tough claws which increases its physical moves by ×1.3.
I think Mega Charizard X is the better choice since it gains it can take down things very well with tough claws and dragon dance.