The house edge of this blackjack variation is higher than the regular blackjack. This variation of Blackjack has a catch which the game is push if the dealer is bust at 22. According to the article that I read online. The house edge of this game is 1.55% if you apply the regular blackjack strategy which is still acceptable compared to other games like roulette.
You can win big time easily if you manage to hit those free bet and split in early stage. The only downside of this game base on my experience was it’s very easy to become greedy on bets here when you become frustrated on supposed to be win that turns out to be draw on push at 22 especially if you have a successful free double or split card that result to 20 or 21.