About the same.  I have made hunters from both and a lot of kitchen knives from both.   AEB-L will take a slightly finer edge.  CPM154 will hold its sharpest edge slightly longer.  Both will hold a working edge for a very, very long time.   In real life kitchen use you'll probably not notice any actual difference.   On a hunting knife, depending on geometry, the knife in CPM154 will probably take more abuse.   CPM154 has slightly better stain resistance than AEB-L.  
They are both wonderful steels.  I prefer AEB-L for kitchen knives.   If toughness were the main goal, then I'd use CPM154.