Maximisers are more complex that the multi-linear segments of compressors or brickwall limiters, though they are effectively providing both those functions.
I haven’t used the Cubase Maximizer, but the Ozone one allows me to specify the range of levels over which it is to work. It has several algorithms, with the most intensive bringing my old system to its knees.
However, it is still better to optimise levels by judicious mixing and sculpturing with automation, than aggressively use a maximiser, as the latter can get quite harsh when pushed. They are good to just give a gentle few dB boost of overall levels.