Ported Edelbrock versus W2 out of the box !
For street stuff in particular...... quench is your friend.
So just to add to this, I was reading David Vizards how to build horsepower, and it explains that the benefit of a flat top piston is the rapid ignition of the flame front. For absolute best torque and horsepower (assuming good fuel) compression is still good, but not with a high dome piston that has edges at the top of the dome.
Apparently this high dome blocks the spread of the flame front and costs horsepower.
So barring octane requirements, a high compression motor (over 12:1) with a flat piston dome give best performance.
What I was saying before, is that achieving that ideal is easier to do on a stroker build because of increased swept volume(longer stroke).
Part of that ideal would be not to big of a combustion chamber as well. Interesting stuff.
He also said that a fuel mixture inside the quench/squish area cannot ignite until the piston is .100 away from the head. That explains why the ideal quench distance is .040- .060 depending on rod material.
and it's resistance to detonation on lower octane fuel.