The person who told you this clearly doesn't know much about Audition - probably trying to promote his/her prefered softwarejotb wrote:thanks for your suggestions!
audition no busses -> thats a big minus!
In Audition you can create up to 26 seperate busses for fx.
Effects can be chained/mixed in parallel or serial formation.
One limitation for mixing in Audition, though, is that you cannot drop effects directly onto the master output. So for adding that final mastering effect you need to route through a bus. This is not a big deal, but does take a moment longer to set up.
Mixing in Tracktion is actually a breeze, in spite/because of the lack of hardware emulation. Another advantage in traktion is that it comes with the $399 Final Mix mastering suite plugin bundled free of charge. Final Mix is very much a top drawer application, and it's amazing to get such an expensive plug for free with a sequencer that costs less than a quarter of the plug's standalone price