All the above posters are right.
This is the effect of the rule changes.
http://wizardofodds.com/games/blackj...le-variations/
"Five Card Charlie": +1.46%
21 points always wins: +0.54%
Double any # of cards: +0.23%
Dealer Pushes on 22:
-6.91%
Total House Edge Change vs. normal Blackjack (stand 17):
-4.68%