I used to really love Spidey 2. Looking back, I was 16 when it came out, which really is like the perfect age to enjoy Spider-Man, which is essentially a coming of age story. The awkwardness, the angst, wanting the girl that's impossibly out of reach, etc. All of that stuff really resonated at the time and the second film had it all in spades.
But now, it just kinda feels like a lot of melodrama and sappiness. And some really cringe-worthy lines ("Punch me I bleed!"). There is some GREAT action in this film (the train sequence is still one of the best superhero action setpieces put to film) and that's one of the big redeeming qualities for me. Doc Ock is a great visual villain, but that's kind of it for me. I don't think they sell his tragic arc all that well (the inhibitor chip thing is such a copout), nor do I even think Doc Ock needs to be a tragic character in the first place. Molina did fine with what he was given, but I still would put Dafoe's performance above his.
I still think it's a good movie, and a very good superhero movie actually, but when stacked against a film like TDK that's so much more than a CBM it inevitably pales in comparison.