I heard an interview of Wilson when he spoke about Poni, and I think he's got a very good read on Poni, and it actually convinced me again of Wilson's ability to read players, and his coaching ability.
The interview started with Watters calling Poni an 'enigma' and he's a soft player for his size. Wilson basically said some players have certain elements in them, that you can work on, but some players just don't have it in him. Poni, despite his size, is not a feisty or physical player. He utilizes his size along the board and in the corners, but if you want him to play that feisty, intimidating physical game he just doesn't have it in him.
But Wilson said if you can forget his size, and just assess him as if he's an average sized player, he's a speedy winger who is consistent for ~ 20G every season, and that isn't bad at all. He's responsible defensively, he feels comfortable playing him in the last minute of a 1 goal game, and he consistently leads the team in +/-. He can play in 5 on 5, PK, PP. And off the ice, he's a very nice guy, which is another reason why he just doesn't have that feistiness in him. But Wilson thinks he's been a positive influence on the young players, especially the young Russian players like Grabovski, Kulemin etc.
So all in all, despite Watters' attempt to sell him as a disappointment or a player that's not part of the plan, Wilson likes Poni and sees him as a valuable contributor on the team.