Is Celebrity as good as RC?

We always cruised on Royal Caribbean and love it!!! expecially our 13 year old son.But we want to do the southern caribbean and Celebrity has a better itinerary...My son had so much fun on the RC and we are affraid he won't have as good of a time on Celebrity..Rc has so much to do on it golf,flowrider,basketball court,rock climbing plus a fab teens program.Help!!!! If someone could give me some imput .Thank You :)