The Amplitube Tweeds are amazing imo… they really have that hairy, but smooth silky sound.
However I think there are definitely some sounds on the Cubase Bass Amp that would take longer, be more difficult to get in Amplitube. In Amplitube, I usually have to work very hard to nail the sound, kinda like the more control you have… the longer it takes to be satisfied.
I think I also like the virtual mic response better with Cubase’s, although I generally leave that section bypassed.
I don’t know which version is used in some of the Halion Sonic patches, but I have attempted to replace the amp FX a couple of times, and concluded that what they dialed in was better than what I could replace
Love having options.