Well, I realize that they are completely different...in almost every aspect, except for the fact that they are both musicals. But, would we be comparing them if they were exactly alike?
I think they both have great entertainment value...but, maybe cater to completely different audiences.
I still prefer RHPS over Grease. I can be in the worst slump ever...and all you have to do is pull up the Time Warp on Youtube...and I'm gonna smile, hop out of my seat and take that step to the right.