Experiencing 100NL @ Rush

I've been playing up a level - to $100NL. In Rush poker, I've been finding it fairly easy going; I've been getting cards!

For the most part, though, people are yielding to my aggro tacts, so I'm usually able to take down pots uncontested. I'm finding, though, that people are stacking off *MUCH* lighter!

For example, WTF was this guy doing?

Full Tilt Poker $0.50/$1 No Limit Hold'em - 9 players
The Official DeucesCracked.com Hand History Converter

UTG+1: $105.25
Hero (UTG+2): $202.20
MP1: $254.90
MP2: $107.25
CO: $29.70
BTN: $115.70
SB: $40.00
BB: $69.50
UTG: $80.75

Pre Flop: ($1.50) Hero is UTG+2 with 6h 6s
1 fold, UTG+1 calls $1, Hero raises to $4.50, 6 folds, UTG+1 calls $3.50

Flop: ($10.50) 6d 8h Ac (2 players)
UTG+1 bets $15, Hero calls $15

Turn: ($40.50) 7h (2 players)
UTG+1 bets $85.75 all in, Hero calls $85.75

River: ($212.00) 6c (2 players - 1 is all in)

Final Pot: $212.00
UTG+1 shows As Th (two pair, Aces and Sixes)
Hero shows 6h 6s (four of a kind, Sixes)
Hero wins $209.00
(Rake: $3.00)