Temporarily? If IM hadn't taken out the mothership, Hulk wouldn't have been able to get out of that predicament on his own. He was bombarded by Chitauri, was unable to extricate himself or fight back, and later on when the chitauri auto-died then we seem him groggy and bleeding.
No. We see Hulk killing chitauri and beating on loki before the mothership is destroyed and after his "overwhelmed by laser fire" episode. Hulk also saves Iron Man's life after he destroys the mothership. You're remembering the scene wrong.
Hulk got out of his predicament on his own and before the chitauri auto-died
Just re-watched the scene. Looks like we both remembered wrong. Hulk beats on Loki first before he gets ganged up on by the chitauri. Then just before the mothership explodes (as IM is flying the missile) we see Hulk getting up from a pile of rubble looking dazed and bleeding.
So... looks like the chitauri just left Hulk alone, probably thought he was dead. However, Hulk did not get out of his predicament on his own. The chitauri left him alone. He was unable to beat back the chitauri nor was he able to power-out of his predicament.
I've posted tons of evidence to show that Thor was weakened during the events of The Avengers, that he's holding back, and that in a neutral setting he'd make mincemeat out of Hulk. Here, you can do the same for yourself:
Answer yes or no to the following -
Did Thor use his flying?
Did Thor do any running strikes or flying strikes?
Did Thor use his lightning, either to strike Hulk or to charge his hammer?
Did Thor spin his hammer for momentum in a strike?
Did Thor display any of the offensive abilities he did in both of his movies, up to and including all of the above?
Was Thor explicitly weakened by his unusual descent to Earth, both before the events of the film and later from the carrier?
Did Thor still do better than Hulk anyways when fighting the chitauri, because he was able to start doing stuff above?
Answer Key: [SPOILER - highlight to read]:
1. No
2. No
3. No
4. No
5. No
6. Yes
7. Yes
Points isn't winning a real fight. Hulk was getting the better of him with more impactful blows and wasn't dodging gunfire in the process. Everyone was attacking the hulk.