He only started 9 games his first two seasons and finished those season with 4/4.5 sacks which is respectable, but likely he was limited due to how the Giants bring their rookies along. 08 was really the first season we got see what Kiwi could do with his hand in the dirt for the full season and he got you 8 sacks. So basically you have 2 seasons to go off of. Im discounting 09 because i cant remember what happened. http://www.nfl.com/player/mathiaskiwanuka/2495879/profile In addition that would mean it basically has been 4-5 seasons since Kiwi played DE. So we don't know how much of that is still there. I personally feel that there is not enough to really go on there. At least with Smith, you have an idea of what you are getting. Good run defense and about 6+ sacks.