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So, if you are Cakewalk and you "improve" an already existing product and it could possibly work/sound better (or not), do you want the grief on these boards and out in the aether that you are charging for bug fixes? Cake hasn't claimed that the CA sounds better than the straight PC module. But maybe in making it a VST they did a little internal work, too. Or maybe it just sounds better for some unkown reason. But not enough to justifying a real claim to sound since 4 out of 5 musical dentists can't recommend it. By not claiming better sound they don't get the grief of announcing said improvement but still get the benefit of some claiming it sounds better. Win/win.
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These things aren't subjective though and they're easy to test. Our ears are very easily fooled, more so than the eye even. It's very easy to think something "sounds better" for any number of reasons that have nothing to do with sound at all. There was a good few years here where after every major Sonar release, there'd be inevitable posts about how the new Sonar sounds better than the older one. In reality, nothing changed.
So how do you get around this? Test your software. Do a phase nulling test. If it nulls with the old version with the same exact settings, then they're EXACTLY the same, test over. If it doesn't nulls, then you'd want to try and analyze the frequency response of both. Are there differences? You'd want to check the harmonic distortion: are there differences? If yes, then one certainly may "sound better" than the other.