I'm a bit confused as to what the confusion is?
The base sound will not be better, it will be the same. This is purely tone stacks applied to an existing profile to replicate the interaction when making changes to tone and gain as in the real amp, rather than a linear response we currently have.
Whilst this is not a big advantage to me, it is to many people for a few reasons:
1) If you are very familiar with an amp, then dialing in the sound you want will be easier/very similar to the original
2) Many of the controls are more restricted and therefore less sensitive - resulting in better fine tuning
3) New sounds might be possible as the tone and EQ changes will differ from the linear changes originally made. I would argue these are still replicable but may not be obvious e.g. the mid frequency sweep might be different in the tone stack to the Kemper "standard". You would therefore have to identify the frequency and probably use Studio eq to get you there...
Is this revolutionary? It is if you have craved a more accurate representation of the amp.
I haven't myself, but I can see why many people are excited.