Unclejane, at my Club, 3D has the back seat position,
It all depends on where you fly I guess !
Your FAI ship does not roll faster because of heavy paddles you use;
Usually we use 40 grams, try 30 grams from SAB or lighter form CY.
On FBL devises you simulate the paddles electronically, it will be your choice to use 60,40,30 or less so, your heli will roll faster because of your choice not because of FBL alone.
Therefore difference is mechanical versus electronical, that's it.
By the same token, we all shall try FBL at least once but, for F3C use, you will not like it as yet !