That's exactly what you're doing. You've never seen Exum play, so you and everybody else who has Exum in the top 4 is simply basing it all on what jazzfanz, DX, the media, scouts, GMs, - you name it, you're just basing your opinion of Exum on what everybody else is saying. You're not basing it having seen him play, you're not basing it on any sort of production that he's had in real games - you are only basing your opinion on what other people are saying about him. You may not like it, but it is what it is. Sometimes the truth hurts.