The suitability of the individual prop is what you will see.

The details that determine prop performance happen to include the number of blades. That detail is not actually of as much importance as most of the other details.

You won't see a difference between "all 3 blades and all 2 blades" in your tests, you will only see the difference between that specific prop and it's suitability to the engine/airplane, whether it's the 2 you're testing or the 3.

I've got a model with an OS55AX on it that flies a number of 2bladers great. It flies a number of 2bladers not so great. It flies a MasterAirscrew 12x6(3) great. Matter of fact, the best two props for that engine/airplane are the winning 2blader and that MA 3blader. Why? The MA has about the same blade area in it's 3 blades combined compared to the blade area of the combined blades of the 2blader. And the diameters suit the engine's rpm range for both the 3 and the 2. And the pitch suits too. The number of blades make a difference? Yeah, if the 3blader's blade shapes etc were put into a 2blader, it would suck. For that engine/airplane. But that ain't gonna happen, so it's not really a difference that matters.
(edit..... oops, I forgot that I have reduced the diameter of the 12x6(3) by 1/4" to better suit the rpm range of the engine. now, that said, do you see how that shows the relative value of the number of blades.)

The debate over 3 versus 2 is much to simple. And doesn't actually apply to the individual props we happen to have available to test.

My P47 flies better with a MA 3blader than most 2bladers. The best 2blader MIGHT fly better than the 3, but would you fly a 2 instead of a 3 on that sucker?

My Skybolt flies as well on a 12x6(3) as it does on the 2bladers that engine/airframe prefers. So I fly what I feel like flying that day. I have noticed that the 3blader MIGHT pull better on really hot summer days. I'm not sure that theory backs that up, but theory is just words on paper. How the airplane pulls verticals is right out in front of me, and the 3 seems to beat the 2. Go figure. Or go argue theory, I'm going flying.