NickCrash

Yeah but Politoed is all alone trying to keep rain up. Here there are two weather invokers, one of which is a physical wall while the other is a special one. This is what gives Sand the edge!

Rain has a buttload of Pokémon capable of abusing it, though, like Special Dragonite.

I can tell you know... Rain is barely viable, and I personally don;t think it is at all. You are forced to rely on Politoed... who does nothing but set the rain and... not much else, and then using really weird ways to set rain up other ways. It isn't worth using a team around imo. Certianly more usable than a Sun team... but not much more.