Girls know everything
I'd lump Keg with all the others but to rank them The Keg would squeek out on top (barely) mostly because of what they serve, so there is a perceived higher end feeling. If they didn't make beef as their mainstay they would fall into the likes of Joey's.
Honestly if you're going for steak or prime rib, I would spend a couple bucks more and go to a place like Hy's instead. The Keg is pretty mediocre for beef.