If I am mistaken Stratified has theirs defaulted to #4 also.
wow, you revived an old thread, since then I no longer really run my Stratified tune but I do recall their TC was the same exact method of cobb with their default of 4 being equal to Cobb's 3.5, according to the chart Strat provides. It is said that it can be hard on the clutch and cause misfires from the timing being pulled. It at the very least did a great job of maintaining traction, it can actually help acceleration from a
dead stop if you don't have much experience in hooking up with throttle control yourself, I found a setting of 3 with Cobb to be what I prefer, but rarely use it now with much sticker tires that I can control tire spin much easier.
Edit: Found the old photo that shows Stratified settings. Strat's default "optimal" is about 4.25 on their scale and and I have seen most people happiest with Cobb at around 3 to allow some wheelspin before it pulls timing just enough to get traction.
