I dunno. The very quality of tractability and ease of training you seem to think makes dogs inferior also allows dogs to be put to actual practical uses besides the occasional bit of ratting that cats engage in.
After all, not many cats have ever herded livestock, detected explosives, dragged an unconscious human out of danger, or even just been a simple alarm system. I fail to see how dogs are somehow inferior for being able to those things in addition to everything else a cat does - including ratting and being cute.
But honestly, can't we just get over the silly debate? Why does one animal need to be "better" than the other? Why can't people just enjoy apples as apples and oranges as oranges?