TNK, I LOVE Cradeling that leg.
I get the most control with that variant of side control..and kesa, but i'm not sure everyone calls kesa a variant of side control.
And kengou, he GAVE YOU HIS BACK. Don't get cocky or reality will eventually give you a very rude awakening. I'v tapped my instructor too, but it was when he GAVE ME side control, and then instructed me how to properly slap on an americana.(So I didn't make him tap, he was just instructing me, same principal of what your talkin bout) Kengou as you'll learn, as you get better, you'll notice with your instructor, it will just be how much longer it takes for him to tap you and thats after you start to get good.
Me, and you would get our **** ruined in a grappling competition most likely period, and thats against beginners mind you. Don't get cocky. I'm not trying to be a prick but ya gotta remember this.