I am just kind of mystified at the amount of attention minute differences in tone gets in this discussion. It is like the never-ending discussion between Axe III Fx and KPA IMO.
To be fair based on my limited use with unit, watching youtube comparisions, and listening to what people have posted online the differences have ranged from very tiny to very extreme. It seems to be really hit and miss depending on the amp and the person making it. It's not perfect but a good visual reference of one of the "very extreme" examples. All I did was EQ matching between the two