User blog comment:SsVivid/Height Reference Chart/@comment-5323539-20130225042533/@comment-4183693-20130225045242

That's because RSRP is a magical place where the majority of the population is about 7-8' tall, suffering from Gigantism.  That's also why they're all so young (16-20 years of age, just about everyone) - if their characters were any older, they would probably have heart complications.