RE6 when judged on its own merits is still pretty mediocre, not just as a RE game, it tried too many new things, which would be fine if they hadn't half assed all of them, Moving and shooting was cool, but the shooting itself still felt wonky for this day and age, there were way too many QTEs,which can be done well (like in Dead Space 3 for example), but the rotating the sticks one came up far too often, the story was terrible and had far too many cheesy one-liners, and the inventory was a little too simplified, it doesn't mean you can't enjoy it, but don't go touting it as a good game when it clearly isn't.
"So my lunch today involved both a noodle packet and a sauce packet....so yeah, things are going pretty well for me."
I think RE6 gets most of it's hatred for being so wildly different from what the series is known for. It really is a straight action game with little to none of the exploration and puzzle solving that the originals had. Going from a survival-horror game where combat was often avoided if possible, to a game where you can suplex a zombie through a table, is going to create a split in its fanbase even if the game was amazing (which RE6 most certainly was not).
Obviously they've made some changes in the demo, but I'm not seeing nearly as drastic a shift between this game and the previous DS's as I am between RE6 and its older games. It will probably get some hate for the cover system and the new upgrade system, but it still plays pretty similarly to the older games. It shouldn't be nearly as bad a backlash, if there is one.
The big brain am winning again! I am the greetest! Now I am leaving Earth for no raisin!