JoB vs. DB Strategy ??

[Lurking]

"IF" someone would use 9/6 JoB strategy (perfect play) while playing 10/7 DB - is there anyway to tell at what percent of perfect play there would be playing DB at ??? It is obvious it would be somewhere less then 100.173%...but how much below??
 
The reason I ask is that I will meet up with a friend in Vegas this weekend. He only plays JoB and I like to play 10/7 DB. There are only a few casinos that have both 9/6 JoB & 10/7 DB (yes-I know which ones they are). I know JoB strategy but my buddy does not know DB. So if he were to use JoB strategy on DB what level would he be playing at? Not that we will do it, but the thought came to mind I was curious what the answer is.

[onemoretry]

"IF" someone would use 9/6 JoB strategy (perfect play) while playing 10/7 DB - is there anyway to tell at what percent of perfect play there would be playing DB at ??? It is obvious it would be somewhere less then 100.173%...but how much below??
 
 
According to videopokerhelp.net, playing 10/7 double bonus with 9/6 JOB strategy reduces the return by 0.54%, from 100.17% to 99.63%.

[New2vp]

In addition to 10/7 DB having a higher EV than JoB 9/6 even when you use JoB 9/6 strategy as onemoretry indicated, you can improve that EV even further by just making any or all of the relatively easy changes below to that JoB 9/6 strategy.The advice can be largely summarized as:  Hold onto more 4-card straights including drawing to 4-card inside straights and hold onto 3-card flushes when you don't have a royal flush opportunity.  Let that extra payoff for flushes and straights work for you.If you think he can handle any of the others, they don't seem that difficult but depending on the audience, too many changes at one time might cause someone's eyes to glaze over. Some of these are easier than others, but may rub someone the wrong way if they are used to making other selections.  Since you know DB strategy and also know your friend, you may decide which ones would help the most.   (A lot of people may not like the first two on the list; the first one takes away more chances at hitting the elusive royal flush and the second one causes a loss of 35 coins 90% of the time for that 4% chance to win 750 more coins).  If you ignore any of them, it's ok, the EV is already above that of 9/6 JoB and the sacrifice in EV is usually paid back with a bit less variance.Pick and choose from the list below:1.  Hold onto to 4-card flushes instead of every 3-card royal except QJT.2.  Break up a full house that has 3 aces and hold the 3 aces.3.  Select the 4-card straights from 5432-QJT9 even when you also have a small pair from 22-TT.  In JoB, you already keep KQJT over TT.4.  Hold onto inside straights:  QJ98, QJT8, KJT9, KQT9 instead of holding just 2 high cards.5.  Hold onto inside straights: J987, JT87, JT97, and QT98 instead of holding a singleton J or Q or a the 2-card suited JT or QT.6.  Hold onto the low "wheel" straights 432A, 532A, 542A, 543A instead of the singleton Ace.7.  Hold onto a 3-card flush with one high card instead of holding onto that single high card.8.  Hold onto inside straights or 3-card flushes instead of throwing away all 5 cards.Of course, all this goes with a warning that should go without saying.  There is no guarantee that your friend will do better than he would have done with JoB, with one reason being the considerably higher variance.  Not too many people like new strategies on new games (even if the strategies are sound) if they happen to lose more money than they are used to.