This is a case of rumor "becoming" fact. Slater played two years of RT and one year of LT. He did not play along the interior in college. Sure, he played guard in highschool if you want to count that (I wouldn't). As far as I know, he's never played center.
Slater is good in space, yes. I don't want to detract from that. But he is not the freak athlete that Wirfs is, and that's BEFORE the disclaimer of "for his size". The dude ran a 4.85 with a vert of 36.5" (combine record) and a broad of 10'1" (tied for record) at 320 lbs - he set the twitter world on fire with his combine performance, and his athletic testing and weight room numbers easily translated to game film. He was not a perfect pass protector, but it should not be even remotely implied that he was not a good pass protector. He was very advanced technically, not quite to the level of Slater, but had the length to make up for the majority of his technical or mental missteps. There were also scouts who actually preferred him at guard, and projected him as an elite level guard prospect, somewhere between Scherf and Q. Nelson.
Slater is a great prospect, and a first rounder. But he is , imo, a tad overrated because of his - what was it, all of ten direct snaps? - versus Chase Young. Yes, he held his own versus Young, and looked wildly impressive and in control in their matchup. But he also gave up pressure in that same game to other edge rushers. IIRC, Tyreke Smith beat him inside when he was too quick to shoot his hands. Ironically enough, I view him as an OZ Guard, and OG2 in the draft behind Vera Tucker. Top 25 talent. Recent comp would be Jonah Williams. Jury is still out on his ability to succeed at tackle.
Edit: Daniel Jeremiah is apparently very high on Slater. Has him as OL1, and he does in fact have a higher grade on him than he did Wirfs (6.77 vs 6.48). I can't find his grade on Wills, but I'm pretty sure he had Becton as OL1 last year. If so, both Slater and Penei would have been OL1 and OL2 respectively in last year's class.
[ Edited by adrianlesnar on Feb 27, 2021 at 9:33 PM ]