Better to play something not as difficult as the next guy but play the hell out of it than to over reach and just be another pretty good renditions. Pretty good doesn't win.
+1
If you choose a piece for a competition or audition (or a concert), it is reasonable for the audience/judges to assume you believe you can play it and so be interested in what you do with it.
If it turns out you can't actually play it - that you are not in control of your choices - they have a right to be doubly disappointed. Not only is it not good, but you have wasted their time. It also reflects poorly on your judgement.
I may not agree with the choices someone is (actually) making, but they are always at least interesting. If they are not making choices, but merely doing the best hack job they can, it's profoundly dull.