I think Waves tends to *try* and over-complicate, not because the DAW doesn't provide a feature Waves plugs are expecting, but rather that Waves doesn't have full control of the DAW.

Danny/Ol Pal,
 
I am not sure that there is no difference in a MONO Sonar track and a stereo Sonar track with a MONO input.... that whole debate about Sonar not having true MONO processing thing.  I usually waste a buss as a stereo processing engine (for stereo plugs) whereby I send MONO output audio tracks to the buss just to process the track in stereo with a stereo effect.  Sounds different to me than just putting a stereo effect on a SONAR stereo track recorded with a MONO audio input.
 
This has always confused me as well.
 
Jim