You can specify in the Output menu what comes out of the Main Outs.
Normally it's Master left and right, which carries the Same signal unless you put a Stereo effect post amp.
Try it with the Air Chorus and you know what I mean with stereo.
A multi- mic setup is never reflected in the stereo image, and that's a good thing.
Thanks for the info.
When I record a real cab with two mic's I always send them to different tracks. That way I can blend and slightly pan the two different mic tones to taste. I get more flexibility that way.