Could easily say the same about Kane albeit not a RB. Not many thought he would make it when younger as he doesnt have any real outstanding qualities - no real pace, skill etc but has worked really hard at his game and his mental strength means he scores so many goals because no matter how many chances he misses he doesnt go hiding....
People who think Kane doesn't have outstanding abilities don't watch him closely enough … his balance and shooting (Kane puts a very high percentage of shots on target, very rarely hits row z type shots), his passing (very underrated) and his positioning (the main attribute of any great striker, being in the right place at right time).
To GB's point, yes pure defensive nouse is a quality, is someone saying they see that in KWP? not trying to put the kid down, all the success in the world to him, just don't see it yet.