Really, draft grades in general are meaningless.
I'm not 100% sold on Wilson as being better than Fields or Lance, but I like him enough, and I've bought into the Saleh kool-aid enough to trust them. Building around him is vital, and since we haven't addressed OL enough in free agency, getting the best guard in the draft to plug-and-play is great. Trading up two 3rd-rounders for a guard isn't great in a vacuum, but I think it made perfect sense for us.
Our Day 3 picks outside of Nasirildeen and RBCarter aren't overly touted by the internet draft guys, but you can see a reason for all of them to be worthy dart throws at positions we need.