ROUND 1...Who wins?

Angel V Banshee
Dazzler V Gambit
Pyro V Sunfire
Colossus V Archangel
Azazel V Beast
Toad V Nightcrawler
Storm V Jean Grey
Cable V Rogue
Warpath V Bishop
Mystique V Cannonball
Kitty V Cyclops
Callisto V Iceman
Jubilee V Havok
Magneto V Wolverine
Scarlet witch V Quicksilver
Professor V Juggernaut
Emma frost V Sabretooth

"Ultimate" X-Men or "Ultimate X-Men"?

the second one, what i meant is xmen characters put against each other

I'm just being pedantic

(and that would mean the first one, not the second )

ok so to answer this...who would win each battle in your opinion

Should that say Professor X?

Immediate disqualification for Azazel for starters. He's never been on any X-Team nor an ally. Beast wins that by default.

Awaiting judges decision on Pyro, Callisto, Scarlet Witch and Quicksilver. The latter three have been allies at some point or other, at least, but never been team members (unless Quicksilver was in XCorps...) Pyro might fall in with Azazel unless he also had a stint in XCorps, which he might've done before succumbing to the MLV...

So power-wise battles? Okay.

Angel V Banshee
Dazzler V Gambit
Pyro V Sunfire
Colossus V Archangel tough to call this one. Both metallic-based, I think it would depend on the situation
Azazel V Beast
Toad V Nightcrawler
Storm V Jean Grey again tough to call. Their power levels fluctuate depending on the writer. I'd go for Jean though most of the time, though if the situation called for it Storm would be more ruthless.
Cable V Rogue depends who Rogue's powered by, if she had a telepath it'd be closer
Warpath V Bishop Bishop beats most everyone
Mystique V Cannonball
Kitty V Cyclops again close. Not sure what he could do to stop her.
Callisto V Iceman Callisto's ruthless
Jubilee V Havok not sure what Jubes' vampire powers are so idk on this one
Magneto V Wolverine
Scarlet witch V Quicksilver
Professor X V Juggernaut
Emma frost V Sabretooth

Azazel is already disqualified but a ruler of hell of his calibre would beat Beast any day of the week. Unless you're saying Beast wins because Azazel IS dq'd in which case I'll shut up.

If Juggernaut had his helmet on he'd pummel Xavier into a red stain on the ground.

Apart from those, I think you're spot on.