The Intune & XCal are just tools that both do the same function.
I use the Xbox and PS3 reference pretty often. Both allow you to play the same games with some slightly different functions.
While I can't guarantee any substantial gains with the canned tune, I can assure you that gains of 15-17rwhp are achievable with a custom tune. We've done numerous cars in house with the Intune and made great power, we've actually got a 2012 on the dyno today getting a custom tune with an InTune.
So who won the free Intune give away? I hope it was me