VEMStune is getting better and better but it's still no tunerstudio.
I hope it doesn't turn out to be like it either, neither program is perfect. Having used Tunerstudio to tune a couple of engines I only really liked the live VE analyzer which I more or less felt forced to use because of the poor interface of tuning directly by editing the VE table in 3D, it didn't suit my style at all but I did like the coloured polygons.
Overall I felt like TunerStudio was a bit cumbersome to navigate (bring up a dialog, traverse dialogs, change settings) in comparison to VT and gave me too little live information to look at while tuning, compared to say VE tune main view in VT. It however felt more complete and bug free, something that can't be said about VT which is still very much in development. Just like the firmware, the latest VT versions are usually the best so it's all good, evolution is at a pace where a new VT package comes every week or so.