We have not done any reviews or technical coverage of them in some time. We have talked them once or twice a year to get basic information.
The biggest differences we see is (1) Qognify is narrowly focused at large to mega-sized systems and (2) they focus on selling not only VMS but PSIM and their other command and control software options / offering.
From what we can tell, far far fewer integrators sell Qognify, given Qognify's focus on mega projects vs integrators more typically wanting to sell mid-market deals.
If you sell many very large projects (thousands of cameras, smart cities, etc.), it would be worth looking at Qognify but if your normal project is hundreds of cameras or less, the common choices are likely more appropriate - you mention Genetec and Exacq, Milestone and Avigilon are other ones, etc.