Whether or not you* feel that an amp who alters (distorts) the signal more presents a more realistic sound has a lot to do with your entire system, your preferences and bias, and your knowledge of what 'real' sounds like.
(* by you I mean all of us, and not Viajero in particular)
My personal opinion is the same as this reviewer. I look for my amplifiers to do nothing more than amplify, and I look to the speakers to alter the sound to my preference. What is important then, is the relationship between the amp and speakers.
For example, I thoroughly enjoyed the sound of the Bryston 9BSSt2 with both MartinLogan Summit X, and with Thiel MSC1, but found it too sharp with the ARE Audio Light Roasts - which have a much more raw treble presentation. They sounded considerably smoother with my Marantz PM8003 integrated, which was great with the Summit X's, and not so great with the Thiels.