I wouldn't think about the bridge, if it's comfortable (if you can try it out) go with it.
But the RG7 is made of Basswood and the S7 (as usual) is Mahoghany so if you know your wood, go with whatever you prefer in that.
As well as, the RG7 having a thicker neck, radius 430mm, and the S7 @ 400mm although it is 19mm (1st) and 21mm (12th) than the RG's 18mm and 21mm respectively.
But yeah, think about the bridge too. I wouldn't suggest swapping them around, etc.