Cross is better in:
- iTunes integration! Even logical sorting is imported and the whole look & feel
- sound when you're using mastertempo. Compare sounds in the moment you change the pitch or when you're scratching!!!
- CD-Timecode. It is more accurate.
- Automode (afaik). I think there is none in the cheap traktor version. But even Cross DJ has it (wanna go for a pee while working?

)
- looks of the GUI. Is it looking sexy or what?
- integration of other technology. I think about Pioneer's recordbox. It bases on the same kernel and there will be a raising number of Pioneer DJ's using Mixibes stuff.
- Reliability. (and I checked it) On the same PC MixVibes Cross kept on working with the same tracks all night long when Traktor crashed on some maybe broken music-files (mp3). Cross is made for maximum reliability. When your PC / Mac is fine, Cross is fine, too.
That's what you can tell others when they ask you... and there will be more. Check the upcoming internal fx of Cross. They are AMAZING!
Oh, I almost forgot: Cross works with every MIDI-controller and with almost all HID-controllers (Bi-Directional) and with EVERY soundcard. The better your system is, the better it's to work with it. You allready HAVE a nice soundcard like an RME and do NOT use timecode? Then MixVibes starts at below 70,- euros...! With full list of features. Only without timecode. beat dis...
Cheers
Ralf