not a patch on someone/something
not a patch on (someone or something)
Not nearly as good as someone or something. The replacement actor did a serviceable job, but he isn't a patch on the original lead. I loved my old computer—this new one is not a patch on it.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
not a patch on someone/somethingBRITISH, INFORMAL
COMMON If one person or thing is not a patch on another, the first is not nearly as good as the second. He was handsome, she thought, but not a patch on Alex. The facilities aren't a patch on those of richer schools, but the boys think they're terrific. Note: This is probably a shortened version of `not fit to be a patch on', suggesting a piece of cloth that is not good enough to be used as a patch to mend a hole in a good piece of clothing.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012