Charizard vs Blaziken
Charizard and Blaziken are probably the two most popular Fire Starters. They're also the two "first" Fire Starters. What I mean is that Charizard was the first Starter (along with Venusaur and Blastoise) but Blaziken was the first in what appears to be a long line of Fire/Fighting Starters.
Both are offensive Pokemon, but Blaziken has better attack stats (on both sides of the spectrum) while Charizard has better speed. Of course, their Dream World abilities offset this by giving Charizard a power boost in the sunlight (via Solar Power) and Blaziken a speed boost with the aptly named... uh... Speed Boost.
Who do you prefer?
Who'd win in a fight?
Who's more useful?
I like Blaziken a lot. He's my favorite Fire Starter and one of the only four Fire types I actually like. This is really no contest for me as I detest Charizard with a burning (gedit?) passion.
Other Charizard Starter matchups:
Charizard vs Typhlosion
Charizard vs Infernape
Charizard vs Enbuoo
Other Blaziken Starter matchups:
Typhlosion vs Blaziken
Blaziken vs Infernape
Blaziken vs Enbuoo