It's all in the eye of the beholder isn't it? The only thing that is clear is that none of us, other than a very select few that I am decidedly not part of, have any idea what we are talking about in regard to evaluating players. And that's true of almost everyone in the "draft expert" business too. And frankly, even the real experts working for NFL teams are lucky to get player evaluation right 50% of the time.
So, it really comes down to those who understand the limitations of their knowledge and those who don't. It also comes down to who is sober and who isn't, which is often a big factor in bravado of every kind.