[Lee]

If 2 pistons at a slow shaft speed have the same surface areas then they will feel the same, it's when the shaft speeds up and the flow goes from laminar to turbulent that the number of holes and the shape of the pistons edges come into play.

You will find that a losi piston with 3 holes will not pack as abruptly as an AE piston with 2 holes, an AE pistons sharper edges also make it pack more abruptly as the rounder edge of the losi lets the oil go down the outside of the piston with less resistance.