Not when you're talking small differences between bore and stroke...
When you overbore it's usually in .010" increments... that's not much to influence the burn in the engine...
Plus the thing to keep in mind here is the engine uses the otto cycle of thrermodynamics... It's the pressure that you can develop in the cylinder that determines the push on the piston... Similar pressure will have similar push on the piston... The stroke "amplifies" the force of the push downward on the piston as the crank turns...
But if you go overboard (no pun intended) on the stroke and make it too long vs the bore area, then the pressure and force on the piston are reduced and the flame travel will be reduced... That's why you have to balance bore vs stroke for the best performance...