I think in the end it all comes down to gun fit & comfort level. I've shot my RBL in 20 guage with splinter forend and straight stock and achieved the same basic scores as with a Model 23 Light Duck with pistol grip and beavertail.
If the gun fits, it fits!

To me the RBL 12's with 32" barrels feel club like. Heavy and slow. But that's just me. I shoot a Poli with 32" barrels that probably weighs the same, but just moves better for me. Again, gun fit is what matters.

One RBL item that I don't like for Sporting Clays at all is the automatic safety. I've had it removed on my first 20Ga. and plan on removing it from a 28Ga. that I have.