I saw the one vs X-men so I thought I'd give it a try.
Ultimates
Captian America
Thor
Hulk
Giant Man
Iron Man
Wasp
Hawkeye
Nick Fury
Black Widow
Scarlet Witch (No HOM stuff)
vs
Decepticons
Megatron
Soundwave
Thundercracker
Sunstorm
Rumble
Lazerbeak
Bruticus
Reflector