Yes, Alice in Wonderland wasn't all that great, some would say that is why Dark Shadows is performing the way it is. AiW had massive appeal across the female and the 'psychedelic' demographic, also had massive WW appeal, that's why it was successful, not 3D.
About 3D, how long do you think the market is going to pay extra cash to watch a movie wearing uncomfortable glasses just so you can notice depth? It will fade away soon enough. I still think the studios will use it on the big tentpoles, but I'm pretty sure the days of a new 3D movie out every other week will be dead and gone soon enough.