From what I have read, Genelec doesn´t make any claims about phase correction. I understand Neumann has the edge here. Phase linearity seems to me the reason why many people says the Kh-80 DSP sound more cohesive and real than its bigger brothers (the addition of the Kh-750 DSP, though, should make those play on the same level, or even better, as it allows to skip one unnecessary A-D-A conversion which is unavoidable with the Kh-80 DSP).
This MA-1 software seems a fantastic Dirac-like solution for Neumann monitors (but we don´t know yet the price of that MA-1 mic). There is one aspect I am not 100% convinced about Neumann´s DSP: Internally it works at 32 bits/48 khz, and everything is resampled to that rate (if you think higher-sampling rates are better, this is dissapointing; Neumann claims it is best to get rid of the ultrasounds to avoid convolution effects in the drivers in the audible band). Besides, now MA-1 seems limited to just one subwoofer and stereo; I guess it´ll allow multi-channel and several subs at some point?