Sevenpin, S73 is a strong cover. To compare, my Bank that I used most of the summer is S73. The pearl is going to make the cover read a little less, but you saw how strong it was. I could handle most of the patterns with it.
Now, the RG is higher on the DL, so it's going to get down the lane a little easier and save energy, but it will turn the corner a bit harder when it does encounter friction.