Where does Haloti Ngata ranked among best defensive players in the NFL?

[Ravens1991]

Haloti has played sensational this year. He is the best 34 DE, would be the best 34 NT if he played that and could play both DT spots in a 43.

At the midway point of the season he has put up 43 tackles(I know tackles arent the best stat but for a NT we know all these tackles are making plays go for 3 yards or less.) and 5 sacks. He realistically could end up w/ 80+ tackles and 10+ sacks. That would be pro bowl #s for a DE, putting up stats like that when you are primarily a run stuffer is amazing. Peter King ranked him 4th for MVP voting.

My question is where do you rank him out of all defensive players? all NFL players. Do you think he could win DPOY?