Why do I think Dorian's quads look smooth?
because even in his very best 93 shape, when he extends his quad and flexes, it is smooth.
You can also see this on video if you like if you watch the 1993 Olympia.
He hits a most muscular at the end of his routine.
it is not available on youtube however..
compared to guys like Ronnie (back in the day), Flex, Kevin, and Shawn, his quads just looked smooth in comparison.
You don't have to be at a contest to see this. Just look.