I think Kruger is kind of a joke. Decent situational pass rusher, but only in cases where he can use his one move, which is to bolt out of his stance like a sprinter from the blocks and race around a slow-moving RT to get to the QB. He had 2.5 sacks in the home playoff game vs. Indy because the crowd was deafening and he could get off on the snap. Had 2 more vs. SF because the 49ers Center was tipping the snap count - same reason Ed Reed came flying off the edge on his blitz vs. the 2-point conversion try and blew it up.
He is very light and not very strong, so if an O Lineman gets his hands on him, his play is over. If he's on the road and there's no crowd noise bothering the O line, he gets no pass rush. How many sacks did he have in the first 6 games of the year? 1.5. Then what happened? Terrell Suggs came back and became the focus of the pass protection. When he was the main pass rusher, he did nothing.
Also terrible vs. the run. Always rushing upfield to leave gaping holes, and even when he does play his assignment is easily blocked due to limited size and strength.
The guy has started 6 games in his NFL career and suddenly he's getting $10M? He only played 22 snaps in the Super Bowl, in favor of Courtney Upshaw. Shows you how much the Ravens trusted him to set the edge vs. the read-option.
He is a decent situational pass rusher, good when he can use his speed rush, but is otherwise mediocre and will be deeply disappointing to whatever team pays him to be an every down disappointment. Especially at $10M per year.