Is 看怎麼理解? a generalized expression for "it depends" in Mandarin? How about for Cantonese?
看怎么理解 is okay, but it wouldn’t be appropriate in all cases because 理解 is, in of itself, quite specific.

A more general phrase for 看怎么理解 would be:


  看你怎么看


(P.S.: adding a 你 in between sounds a lot more natural)