This is true.
The college I played at, I saw a center after I had graduated who was 6'4, and it was like... "really?" But, he is bad example perhaps, as he was not a top rebounder or anything like that, just really strong for his size.
In college this year, Andre Roberson not a particularly strong guy, 6'6-6'7 guard. but averaged more than 11 rebounds a game, because he had great instinct, timing, and jumping ability. But in Baylor game on ...Saturday? he got worked left and right, by worse rebounders, but the guys were bigger and stronger, so he couldn't get his normally great positioning.
I also saw NBA highlights yesterday of Gallinari breaking his thumb, on a block, where he blocked, got all ball, but the guy was still strong enough that he finished with the ball still for a dunk. Gallinari clearly not the stronger player in that showdown.
What about the speed aspect then, cause I see where you are coming from on the Strength side of it. Also, what do you think of the 2 defensive tactics as well?