In my view, the answer to this question is a resounding no.
I wouldn't say a resounding no. Some people genuinely prefer android for those uses, I mean this is pretty simple usage and something android can do just fine. Facebook app is pretty good on android tablets and there's a few good Twitter clients with tablet support, Evernote is very nice on Android tablets too.
Ipad pros are the games and battery. Nexus 10 pros are price and the masses of extra things Android can do.
Personal preference basically OP.