[reasonisfaith]

These sandwiches never seemed right to me. I’d give ten of them for one average Philly cheesesteak.

[jimfree]

Not even close. You must have had sucky French dips.

[ifinnegan]

I like Philly cheese steak, too. But a French dip can be good too.

[airborne]

I like to take a Philly cheese steak and dip it in the au jus.

[KevinB]

The sandwich is dipped in a broth-like gravy called au jus that's made from the juices of the roasted meat.

"Au jus" is not a thing. "Jus" is the French word for "juice." "Au" is the French word for "with." "Au jus" means "with juice." It would make no sense to say, "I'll have that with au jus." One would instead say, "I'll have that au jus." There, I feel better now. :-)