Just remember that Damon Webb is the fourth best cornerback at OSU after Conley, Lattimore, and Ward (possibly Arnette too). That's nothing to be ashamed of. Many teams "hide" their best receiver in the slot which matches him against a weaker DB like OSU did with Devin Smith at times in 2014.
Sometimes a team's best receiver is the slot guy. Anyway, that's usually who Webb guards - the slot. Teams punished OSU earlier in the season for being unwilling to change assignments and moved their best receiver to the slot.. When OSU adapted they'd often use motion to create a numbers advantage in the run game (Wisconsin).
Anyway, the issue is often a scheme chess match not a slam on the player. Every team has a guy who isn't as good as the best players at the position but is still a good player. Webb seemed to find his footing in the back half of the season. I have faith in him. Plus I think no one except Conley or Lattimore will guard Mike Williams.