fuel burn, and CASM by proxy, on the a321xlr and 7m10 are much better though many pilots love the takeoff performance of the 757.

check out how they compare here: https://www.aviatorjoe.net/go/compare/737_MAX_10/757-200/

the 757 was the best narrow-body long-haul capable jet of the time (and it was the only one of its type that could fly LGA) but more fuel-efficient engines will do to it what the 787 did to the 747.