Great review, Agreed there was no real Wow moment but I liked how it tried to be more "serious" than the last film. 3/5 feels about right rating wise, the rape joke was kind of an awkward moment in the movie for me because it's not a scenario you treat so lightly. From what I've noticed a lot of people didn't like that it wasn't as comical and over the top as the last one(Not that this one wasn't crazy with mother Russia and other random stuff), the last movie felt like it had more heart to it. Possibly the pacing is what made this movie seem disjointed because there was 3 separate(main) stories that weren't intertwined well enough to keep up a exciting pace. Hit girl's storyline needed a bigger pay off moment that I felt they dropped the ball on in the end. The adrenaline syringe did make me laugh in a good way and I liked the Hit Girl vs Mother Russia wasn't just hit girl winning the whole time.
Oh and Todd's recasting was annoying as sin, writing todd off and saying they had a new friend would have explained the way they treated him better.
I thought the acting of the two leads was probably the best part of the movie. Also Jim Carey was surprising, I normally can't stand him but he was good here(Thought the same of Nicholas cage in the last movie)