Ok,Everybody says he's one of the best,Not!!!
Reasons why:
(1.)He's slow.It'd take at least three turns to get him out.And even If u use 
breeder,the fossil mew coming out will de-evolve him and an areodactyle which 
is compadable with any deck he could be fighting,Will stop the evolution that 
charizard needs to get out!
(2.)One word MIME,nuff said.
(3.)Energy removal and super-energy-removal will leave charizard crying lava 
when his precious double colorless are discarded
(4.)and his damage?Did anyone ever think of defenders?If your opponent knows 
u have charizards in your deck,i'd think he/she will think of keeping 
defenders to counter it.At least two will keep any pokemon with 100 hp in 
there.
(5.)I'll just say,A good player will either kill charmander/charmeleon beofer 
u get out charizard and/or use all of the above to your dis-advantrage and 
thier advantage.
Hands down,Charizard sucks.