A balanced signal can be sent by both balanced TRS 1/4" cable and mic cable. Both are balanced cables. No, there is no difference. That's why you can use the same wire for both mic and balanced TRS and create XLR to TRS cables with no problem.
Of course, usually TRS is used for line level signals while XLR is used for mic level signals. But that's probably just a convention. As long as the cable can carry the line level voltage for the powered monitor, then it should be all good.