don't forget about the fact that cubase / nuendo works with 32 bit floating point, which gives you way more headroom than a 24 Bit DAW.
a well known mastering engineer i have talked to in person did some tests - listening tests, not measuremnts - and came to the conclusion that the cubase
summing (bus) sounded way better than pro tools or logic...
you have to test that for yourself, and it may be up to your taste,
but for the things i do, the 32 bit floating point technology (preventing internal clipping) is important, as i don't have to watch levels, and mix by ear, not by eye..
but maybe i'm just too lazy learning a whole new daw and setting up a new workflow