Darkseid (post-Crisis, pre-52):
Darkseid has found out about the Infinity Gauntlet and teleports himself to the Marvel universe to find it. Adam Warlock somehow senses the new dangerous presence and quickly assembles a team to go deal with him. There's no time to waste, so as soon as all members are together they begin their attack.
No prep, everyone in character, standard equipment. No knowledge, but they can all sense the power of their opponents, so they wont be holding back. Gladiator is at 50% confidence. Sentry is at 50% crazy. Thor is having a good hair day.
Can Darkseid defeat this team?