this is from TSN:
Ken Iwebema
War Room analysis
Strengths: Is a good athlete, with quickness and agility to change direction and make plays. Has strength to jolt offensive tackles with hard hand punch, and then beat them with secondary pass-rush moves. Shows a quick spin move, and beats offensive tackles inside with quick burst underneath. When playing with good leverage and aggressive hand usage, jolts run blockers upright and makes tackles. Is smart, and reads plays well. Accelerates quickly down the line to tackle ballcarriers from behind.
Weaknesses: Should make more plays than he does. Must become much more consistent shedding blocks at the point of attack. Lacks explosiveness to threaten the corner as a speed rusher. Does not work hard every snap. Tends to play upright, and struggles to hold his ground. Often looks mechanical. Does not make many impact plays.
Bottom line: Iwebema is a frustrating prospect: He flashes a lot of ability but just isn't as productive as he should be. Iwebema has the talent to be a quality NFL starter in a 4-3 scheme, but he must become much more aggressive and productive. If not, he will become a journeyman.