I said that because I haven't found light planes to be more wicked than heavy ones. On the other hand, I don't build heavy planes. I think the heaviest I've ever flown was a 96" Sukhoi weighing about 26 lbs. As I recall the wing loading was about 35 oz/sq. ft. That's not heavy for that size plane.

I think if you go to the scale forum and ask about some of those planes and their stall characteristics you might get better info about how heavy planes behave.

Sport models like most of us fly even at their heaviest aren't really that heavy. We call them heavy when they weigh more than they could.