I was surprised he's almost G3 size! o.o But then I thought about it and it makes sense. They had to make his size match Cadance, who is larger than the normal G4 brushable. And it makes sense even 'in story' because he's Twilight's big brother and they did go out of their way to show he was larger than her. Still, that's quite a size difference if he's almost G3 size!