Sounding “better” in this context is purely subjective.
You could replace a fine classical work with RAP music, and there’d surely be people who think it sounds “better” than the original.
In any situation where the modified copy is discernibly different from the unmodified original, it’s always possible that someone would claim the copy is “better” - BUT would YOU also think it’s better?
Going by objective instead of subjective measurements, a processed copy can never be better than the original, since the best possible copy is identical to the original.
Sometimes an original can be subjectively “improved” upon (according to most listeners) by performing advanced processing, such as intelligently reducing noise.
Re-encoding music in different bitrates using the MP# (or any other) format is not such a form of advanced intelligent processing, so it will not produce a result that is subjectively better for most listeners, but rather produce a result that is worse for most listeners.
Your try it and decide for yourself.
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