I haven't seen Batman v. Superman yet, I'll probably see it this weekend. But I doubt it will top TASM2 for me.
TASM2 was great, I love it. There are a few things about it that I take issue with like how they basically shoehorned the Goblin story in there and made Harry the Goblin first, but thats really my only issue with the film. I don't quite get the hate for Electro, he wasn't even that bad. The soundtrack is pretty great too.
Andrew Garfield, was so underappreciated as Spider-Man. With Garfield I actually felt like I was watching Spider-Man; he had sarcasm and wit, had spider like movements, and webslinging was a blast to watch. I didn't get or feel any of that from Tobey Maguire. We lost a good thing because of the bafoonary of Sony, Avi Arad and his lackey Matt Tolmach. The sad truth is if that the Webb films had a Marvel Studios logo slapped on it, the masses would have loved them. But this isn't the thread for this and whats done is done.
I will say that I have doubts BvS is as bad as everyone says it is.