DS2's difficulty is all in the bullshit leading up to the disappointing boss fights.
DS2's best shit are the mechanics, tho. True dual weilding, limitless invasions, no level matching for multiplayer, bonfire aesetics, enemies stop respawning after X number of kills on the same dude, etc. The only thing holding it back, mechanically, is the dumbfuck Soul Memory system. And for first time players, the stat that affects how many iframes you get when dodging.