Reminds me a bit of Samsonov, who is 5-8 and had/has a pretty good NHL career. Gusev is 5'9''.
I'm not here to hype him, but here are some facts for N.A. fans:
-Leading scorer in MHL this season (37pts, 17 gp)
-MVP of MHL play-offs (27pts, 16 gp)
-6pts in 4 games in the Finals with clutch goals in 3 of 4 games
Don't forget, most Russian players begin filling out later, in their early 20's.
He is having a hard time adjusting to KHL this year. But that's understandable, 99% of players do. Kuznetsov and Tarasenko also struggled in their time.
His skating may look a bit wierd, but he can fly. Check out his goal at 00:34
http://www.youtube.com/watch?v=cxMuvcvyF6M
With the right development he could be a gem.