What am I up against?

[IdiotVig]

PS 5+.5, blinds 15/30, 7 players left. Table is loose/passive, now that the 2 real agressors at the table are out. You're on the button with ATo. Everybody limps, and we see the flop 7-handed. Flop comes AAK rainbow. UTG bets 30, UTG+1 makes it 210, UTG+2, who has you covered by 10 chips, pushes. Mucked around to you.

1.) What does the pusher have?

2a.) Is this worth a call?

2b.) Out of curiosity, is this a call against a typical PS 10+1, 20+2, or 30+3 lineup?

-IdiotVig