This isn’t exactly true. Sure they’re close but if you use them enough there are big differences. The upper portion of Roach and Luna are nearly identical, but the on the bottom of the wing the Roach has a considerably flatter “bevel” and the Luna is much more rounded.

I use Roaches universally for all putter shots, but I switched from the Luna. I actually prefer the feel of the Luna in the hand but for a floaty spin putt like mine you clearly see the Luna’s overstability. You have to putt Lunas harder or with more anhyzer from further away.

As far as throwing, you can find Roaches and Lunas that fit every slot, but generally speaking the premium plastic Lunas as a whole have a touch more stability. The most stable, limited run Z Roaches compare flight with a stock BigZ Luna.