I'll offer another thought. When I carry things, I tend to carry more in my left hand so that my right hand stays free to open doors or do other things that I naturally do right handed. When I had my boys, I would always hold them on my left side using my left arm to keep my right hand free. So, for me at least I believe my left arm is stronger because I actually use it more for carrying than I use my right arm.
You hit the nail right on the head PR! I got a similar story from my sensei when I took ju jitsu. Basically you use your dominant side for more detailed stuff, so you use your non-dominant side for strength.


