Critical Research Failure: There are a lot of examples, the writers clearly didn't know anything about the Asgardians. Or they didn't care. One blaring example is that Hulk No Sells Thor's super lighting attack multiple times in the film but in the comics both Thor and Zeus have demolished him with lighting attacks (though Hulk has multiple times ignored Thor's lightning attacks as well, And Zeus is on completely other level compared to Thor). There are also multiple ways Thor could have taken care of the Hulk. Thor could have dropped his hammer on him to prevent him from moving, teleport him away, using the Godblast, the Destroyer armor, the list goes on and on, and that's just Thor. That doesn't include Loki or the entirety of Asguard. Zig-zagged somewhat considering that the Hulk they fight isnt truly the Hulk without Banner just an abstract personification of pure Unstoppable Rage created by Loki and Enchantress. Tellingly, when Hulk and Banner are once again merged, he collapses from exhaustion.
Narm: From ugly character designs that don't animate well, to epic music that's not really epic, lackluster voice acting, "lush" backgrounds that aren't that lush to "emotional" moments that don't ring true, whether it's Amora the Enchantress professing undying love for Thor or Bruce Banner having to give up his "happy place" (see below) to Odin's less than inspiring Large Ham speech at the end, this segment is just overflowing with it.
So Okay, It's Average: Most fans regard it as a poor showing for Thor and his fellow Asgardians and also regard it as being vastly inferior to the Wolverine segment.