I see Obo as a rotational player
and not as fast or quick as Fowler but might just be able bounce off a block better and keep heading to the QB. Fowler was getting stuffed hard by OL quite often.
Obo has good hands a probably more power in his body overall.
Also he has been thru a period were he had to grind hard to get rehabbed and stay relevant.
I think he would good opposite Ebucan as the LOLB primarily for run support.
He will get a few sacks but he can be very effective role player with no more than 7.