Doctor Octopus vs World War Hulk
Doc Ock has his true adamantium tentacles.
1) Fight starts with Hulk not aware that Ock has adamantium (and Ock doesn't tell him).
2) Fight starts at the point shown in the old Spider-Man story, where Ock already has Hulk held by the tentacles and without leverage. Can WWH do any better than the beating into unconsciousness that the old Hulk received?
3) Hulk is aware that Ock has adamantium right at the start of the fight.