She is also taller than most porn stars. She is 5'7 or 5'8 IIRC.
Damion Dayski is NOT as big as Sly, Anton, Dredd or others. He is a little dude with a big dick and definitely not one of the three biggest black guys.
Sly Diggler 8.5ish x 5.5ish 8.75x5.75 MAX
Anton Harden 8.25ishx5.5ish 8.5x5.75 MAX
And then Damion Dayski is like 7.5x5.5
I generally agree with your estimations except I think Damion Dayski is more closer to the 8" mark in length and I think Anton is girthier than Sly by a bit he's around 6" girth IMO close to Danny D in girth but not quite there.