Uncut dicks have some advantages when getting fucked. They are mostly self lubricating as they produce more precum so they are always ready to pound ass with just some spit, making it more palatable for the bottom later to lick it clean. Uncut tops tend to fuck on the fast and furious side. While cut dicks require more lube preparation, these tops tend to fuck longer and harder before shooting, the bottom appreciate the extra pounding.
When sucking, being uncut myself, it’s easier for me to hit the most sensitive points on an uncut dick.
But, I will not top from the bottom and will gratefully take either dick.