My guess is that B&Os room correction system is years ahead of Dirac – or any other comparable system:-
1. Mapping of known speaker sets and their individual performances
2. Decades of adaptive bass control
3. Directivity and sound steering
4. With the BL90, essentially noise-cancelling of opposing driver sets to narrow or widen the sound beam to minimise room reflections.
Although not an expert, I would put Dirac capabilities similar to that of the BL5 in obtaining average room correction. BL5 was singing its stuff in 2003!