Jack uses his disgusting sauces while Tommys ingredients are all making their own 'gravy'. Seems fair.
It'd all come down to presentation, really. Jack either over/under cooks everything and Tommy has a filthy fucking kitchen where he relies on spices because his tastebuds are shot to shit.
I'd put my money on Jack because he'd at the least try to plate it up nice.
Not familiar with this cow, but based on watching the video without audio he wins hands down. At least his hands are clean, his plate is clean, and the immediate area around the plate is clean. Not that I'm a fan of rare hamburgers, but at least there doesn't appear to be a cockroach infestation there.