Personally I'm a fan of both, although I'm more versed in real robo having watched a lot of gundam and some macross movies. I'd say on the fun scale, super robot is all about that goofiness that defines anime while real robo has some good stories to tell and mechanical designs that wow you.
Go watch it right now
It has all sorts of philosophy and shit and mecha vs kaiju and it is just amazing in every way.