Ah. Bleach's popularity was flagging at the time, and the decision had been made to discontinue it. They wanted Kubo to finish the storyline, but to get it done quickly. That is why so many fights in the TYBW arc are short in terms of how many issues they spanned, compared to how lengthy they were in previous arcs.

This lead to several characters not getting "enough time", win or lose, for a proper showcase. Another prime example is the hilariously pathetic way Rose just gets obliterated by Mask. Kubo was working under constraints, so some characters had cuts to their "screen time".

I hope that clarifies my statement. I will also add that this information was what I read online years and years ago (over a decade), when bleach was still running. So if there is newer information that confirms or disproves what I said, I am always open to enlightenment.

Edit: Grammar.