I know this is a hypothetical situation, but think of the probability that AA, AA, KK, KK, QQ, QQ are all dealt in a 6 handed game. In reality, it's not possible. If it were to happen with competant opponents, it would be on a loose agressive, maniacal table. Maybe something like AJs, TT, AK, KQs, AQ, 88.

I would not expect a lot of high PP's, both because of odds and it takes away from other players' hands (if somebody holds AA, there are only 2 aces left in the deck to make hands like AK, AQ, etc. ) I would expect a lot of high broadways with a lot of domination, and maybe a couple mid-high pocket pairs.

About QQ here, somebody said it is often correct to fold QQ preflop. This is very true (as difficult as it is sometimes). If a tight player pushes my reraise with 100BB stacks, it's an easy laydown. But in a 6-way all-in, I would have to imagine folding QQ would be -EV. I don't really know though, it's not a situation that comes up every day.. or ever. :P