And you guys aren't the only ones who have questioned the fairness of their blackjack. Bernynhel has also stated that their blackjack is highly suspicious.
Generally speaking, I don't think it's good to play games at places that aren't meant for them, i.e., blackjack at a poker room, video poker at a bingo site, etc.
Blackjack, with its notoriously low house edge, is always an easy target for cheaters... so it wouldn't surprise me if Absolute Poker has a hidden higher house edge than most other blackjacks.
There are two reasons why a company will offer blackjack:
1) It's a fun game enjoyed by millions of gamblers, and an honest game of blackjack will keep the player coming back
and
2) It's a fun game enjoyed by millions of gamblers, but not very profitable so in order for the house to make any money off it, it needs to be rigged
I think casinos offer blackjack because of reason #1, and poker/bingo/other sites offer blackjack because of reason #2