I agree with that. I have a 110cc pocket quad and have ridden it once, it's my 5 year old sons quad. It just didn't feel right riding it, too small and no real acceleration plus too slow to have any real fun on. Now if you put a 50lb 5 year old on one they really move.
Just sold a YZ80 it was to much for my daughter 11...lol she is sticking with the YAMAMOTO 150 quad....that yz80 hauled my ass sweet ...but i looked retarded...lol