I am pretty large, both in fath and muscle. I wouldn't know if I lose fat fast because I didn't really try to but I don't lose muscle fast.
I gain both pretty fast and my frame is a little wide. I am of average or short height, 1,75 m. Or 5,9
Oh and saw somebody link a info piece or something saying that there are no different body types. Maybe not types but genetics SO play a role.
So how does your body work?