quench vs no quench?

I'll take a crack at it. The way I see it, quench has one basic purpose. And it's really not to make additional power over a non quench engine. The purpose of quench is to allow an engine to have a higher compression ratio based on the fuel that's available.

So the way the OP asked the question, the two engines will make about the same power, because the non quench engine is allowed to have fuel so that it does not detonate.

Both engines have 10:1 compression in the OP's example, but are allowed fuel to where neither will detonate. So the non quench engine probably has 98 or so octane....assuming of course they have iron heads.

I know a flat top motor may make a little more power because of good flame propagation and all that fancy talk, but that's splittin hairs.

IMO, the two engines given the parameters the OP described will make very similar power. Of course, I could be wrong.....and if I am I wanna learn why.