Single Deck Free Bet Blackjack - House advantage

I was playing at Arizona Charlie's Boulder and they offer a Single Deck Free Bet Blackjack game. $10min. 50% penetration. 3:2 blackjack.

Free bet rules
1. 9-11 double
2. split any pair except 10s and 4s.
3. Push 22

What is the house advantage here?

I have seen this
https://wizardofodds.com/games/free-bet-blackjack/

It says that 6 deck and okay with a pair of 4s is

.79% House Edge

and I have seen this
http://discountgambling.net/2013/08/22/push-22-side-bet-viejas-casino/

5.85% House Edge

Why such a discrepancy?

It seems the Dealer Bust 22 side bet is the one with a 5.85% house edge, and not the game itself.

Do you think that Single Deck blackjack at Silverton has a lower house edge than Arizona Charlie's Boulder?

Single deck Silverton
- 3:2BJ
- 2x 10&11
- Split any 4x
Realistic .58HE

vs Single Deck Free bet?

Is that a Single Deck Freebet at Silverton?

The answer would be yes, because it has better rules assuming everything else is same like pushing on 22, etc.

Silverton doesn't have Free Bet Blackjack. It's just single deck where you can only double 10, 11.

I guess my real question would be

how much more of an edge does the house have with PUSH 22?
- It seems like it would be pretty high since they are willing to compensate with a free double and multiple splits. I just can't find a calculator that can determine the edge.

For the card counter, I have found great success playing free bet especially since when the count is good and free bet option is available.
Ex. +5 count. $50 wager. I got 6/4, dealer 9
Free double. I got an A
dealer 9/10
Won 100.

It would have been unfortunate if I lost that 100 without free bet. But if I did use, I would have only lost 50.

After doing a bit of research, I found out the house edge for 6 deck Free Bet Blackjack is 0.625% if you use this strategy

http://discountgambling.net/2012/06/22/free-bet-blackjack-golden-nugget-lv/

Then I found this website
http://www.blackjackforumonline.com/content/Calculating_the_House_Edge_for_Any_Blackjack_Rules_Set.htm


# Decks Advantage
1 +0.02%
2 -0.31%
3 -0.43%
4 -0.48%
5 -0.52%
6 -0.54%
7 -0.55%
8 -0.57%

So for Single deck Free Bet Blackjack, the house edge would be -.625+.02=

-.605

Is the math correct? Thoughts?


BTW, Doubledeck 3:2 (2xAny, DAS, RSA) HitS17 (realistic .42HE)
- most tables in LV
but poor deck penetration