quench vs no quench?

Ok Im wondering if 2 hypothetical, almost identical engine are built, compression, cam, head flow, everything but piston and chamber design one quench head one open chamber, or piston down in the bore. say 10 to 1 engine running 100 octane or whatever. I guess the tuning could be different between engines, such as total timing, jetting maybe? Would they make the same hp and torque? What do you guys think?
Thanks