I thought every individual speaker in "the ones" series had the DSP tuning set automatically in the final production stage so any individual drive unit differences were compensated for. Thus whilst the nominal crossover frequencies will vary between 8341 and 8351 with their different coax units the precise DSP correction will be unique to each individual speaker.That teardown and the published power spec is what I'm basing the comment on.
The larger drivers and cabinet and thus different DSP tuning is what I assume accounts for the loudness difference. All assumptions.