It's kinda weird, I never liked BL2 back when it was released on consoles. The controls were clunky and the shooting was subpar. But I DLed the Handsome Collection and to be fair it plays a lot better, I am actualy enjoying playing it. It still isn't great IMO but yeah, as a free game it is not so bad as I remember.
60fps vs 30 makes a big difference for shooters.
I don't think BL2 even reached 30 FPS on the 360, but yes that helps a lot.