Is it normal / common physical body type for a couple?

My GF has skinny arm and can't fight her way out of the wet paper bag but her legs are strong. She used to figure skate and dance and now runs. I on the other hand used to only work out at home doing bench presses curls etc and little with legs. My upper body is more then 4 times stronger than hers but her legs seem to be about 25% stronger then mine. Are we a normal couple? Are guys alot stronger in the upper body and usually have slimmer legs while girls often have bigger and maybe stronger legs but the upper body is wimpy and weak.