Well I'm 7 inches. Probably 7 in 10 girls I've been with have said I'm big. One girl said she'd slept with 30 guys and I was the biggest (and could tell she wasn't lying), so I know I'm bigger than most guys. But people like Mandingo is much bigger than me. I can tell.
So if I'm 7 inches, Mandingo MUST be at least 9. That's only 2 inches, which when you look at a ruler, it isn't much. But I feel like I'm under measuring him because he looks miles bigger than me. Ok... I see mine every day, so perhaps I'm underestimating how big mine looks to other people, but he must be bigger than 9 inches. Danny D is bigger than me too, but he's not as big as Mandingo.
Add all this together and I'm certainly not downsizing anybody, I'm simply comparing.