I didn’t see anyone comment on your question from a few days ago, about the seed genetics.
If you’re growing each plant from seed there is no guarantee they will be same phenotype. In fact, it’s pretty unlikely they will. They will probably share some traits, but others will be different. The only way to have same phenotype is by cutting clones from same mother. That’s typically the best way to run side by side grows, at least to get the best data on methods. Should be fun to watch none the less.
Also, about the lollipop. It’s best to do that along with a different method like a scrog or sog. In either of those done properly, there would be very little to no light reaching beyond your canopy. So the lollipop is to clear the growth below the canopy, so it’s not stealing energy from your tops. It is possible to be too aggressive, and can definitely impact your yeild. But even when done lightly, it’s not necessarily best to apply to every grow.