My take on these match-ups. I swear, I won't rig the results!
Zeus v. Odin: Odin, I agree with NT, would mop the floor with Zeus. Zeus (like all of the Greek deities) has human characteristics and weaknesses. Very interesting mythologically, especially before the invention of soap operas, but it makes him such a pushover compared to Odin. Odin is the man. He cut his eye out after sacrificing himself on his own altar, then came back to life stronger. What's Zeus' biggest feat - killing his father back at the dawn of time, and turning into a swan? No contest.
Vampire Hunter D. v Blade: D for the win. Again, he is more focused, whereas Blade is more angsty and conflicted. Plus Blade only naturally kills evil vampires, while D has been known to murder anything.
Kraken v. Nessie: I would love for Nessie to win, but it would take a brilliant tactical effort to accomplish that. I do assume that the Lock Ness Serpent is more maneuverable, being much smaller than the Kraken's mighty tentacles.
Poison Ivy v. Catwoman: Agreed. Leave the pretty kitty alone. She is too cute to suffer so.
Indy v. Zorro: Indy. You know what happens when you bring a sword to a gunfight? You get shot.