Re: How big is too big?
I think Spinks committed to heavyweight more than did Foster. There was no going back, whereas foster was willing to drop back down. I doubt Spinks walked around at 200 lbs; he had to work to get that big. I wonder...
As for Roy, yeah modern weights are tricky. He's probably a natural light heavy, lighter when he was younger, heavier as he got older. And hell, on this site at least, Roys weight is fight specific. Against middleweights he is 'too big and never really a middleweight.' Against heavies he's 's 'a natural middleweight.'