I will never understand why people keep comparing TASM with DKR... It's insane! DKR already has an established presence in the cinema, while Spidey is a rebooted first movie! DKR is the third of its kind in what is probably the greatest Superhero trilogy of all time! IMO comparing the two is ludicrous.
As for the TASM and BB comparison, professional reviews pretty much don't matter, when compared to public opinion. Just look at the popularity of Bay's Transformers movies.
For me, BB may be the better movie, but TASM is by far the more enjoyable movie and really doesn't deserve all the negativity being hurled upon it.
At least TASM didn't turn into another Green Lantern or Ghost Rider, which is what could have happened. At the end of the day, the movie's still a moderate success, which is more than anyone can ask given the circumstances.
As I said before, the money's in the sequel. But I fear that may just evoke unfavourable comparisons to TDK now, rather than be judged primarily against its own kind. (SM2)
As for underwealming being the general consensus? Hell no. I think the reception of the movie has been way too positive to call the consensus underwealming. I think the vast majority can agree that Garfield and Stone, and most possibly Ifans, Leary and Sheen were excellent in their roles.
[/end rant]