judge between (someone or something) (and someone or something else)
To form an opinion, estimation, or determination in favor of one person or thing over another. I didn't think I'd be able to judge between all the different types of computers at the shop, so I asked my friend Tracey to come help me choose what would be best for my needs. We can't be crafting legal policies that judge between people from one background and those from another.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
judge between (someone or something and someone or something else)
to decide between people or things, in any combination. You can't expect me to judge between apples and oranges, can you? Can you judge between the prosecution and the defense?
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.