Is this objectively true? If you have a tube amp playing through a 4x12 and the Axe III playing through a power amp and identical 4x12, and both at the same volume, would people be able to notice the difference? Or if they were both miced up similarly backstage and you were hearing only the PA?This overall matches what I have seen - when one guitarist is playing a modeler (even the best one around) and the other has a cranked tube amp, the difference is very noticeable. As a guitarist and an audience member.
Genuine question.