He-Man vs. Godzilla
Composite for both. He-Man gets his power vest and Sword of Power. Fight is in New York City. Combatants start a reasonable distance apart; maybe half a mile.
Astute forum members will realize that I may have a horse in this race, but that isn't quite so! I fought leo in a BZ with these characters because we both knew a lot about our respective fan crushes. But I didn't take the fight because I knew I could win. I just thought it would be fun (and it was). And, perhaps more than any BZ/tourney match I've been in involved in, I'm still not sure that it's a clear He-Man win. I do think he wins, but I don't think it's a definitive win, and Leo did a lot to increase my respect for the lizard.
If anyone needs battle plans, feats, arguments, etc., go here: http://www.killermovies.com/forums/f105/t600780.html
It's as thorough a debate as you'll find on these two.
As I see it, He-Man has plot device strength, and to a lesser extent plot device "other" powers as well. The Sword of Power is also unassailable as a weapon capable of dishing it out to any herald. But he does have notably lower durability feats than GZ, who is an absolute tank of tanks. GZ's AoE attacks, and NOT just his breath but also his omni-directional energy blasts, I saw as his primary edge against He-Man. They were the one thing I never really countered in the fight, relying on He-Man's speed to avoid the breath (another edge, though to what extent remains up to interpretation). I considered it somewhat lucky that no judge specifically called me out for not having an answer to the omni-directional energy attack. I'm not sure GZ could chain that attack, and I don't think just one would kill He-Man, and we also have to consider that GZ would be getting attacked through it, but it remains a consideration for me.
So HM has offense and speed, GZ has durability and AoE. That's an oversimplification, but also not a horrible synopsis of advantages.
I'm usually not one to do this sort of thing. That's what the BZ is for. But this is the rare instance where the BZ made me LESS certain of a particular opinion, so I wanted to put it to the forum. Our excellent judges weighed in after the BZ was over, but it whetted my appetite for others to voice their opinion. Have at it.