Alex,
At this time it would be very temporary and incomplete to build a comparison chart as we are in a short transitional period. We've build a Universal Program that will allow us to essentially maintain a single code base for the iFly dedicated devices, iPad and Android versions.
In the very near future the only feature differences will be determined by the tablet itself. Things like Capacitive Screen vs Resistive, Pinch Zooming, Internal GPS or not, NMEA Output via USB, etc.
We'll keep an eye on this. Thanks for the feedback.