I think the E80 is exactly the same ...as the EM2000 was to the G1000, and the VA7 was to the VA76...
How do you figure it to be a different situation?
Naturally one model can be refined...If you can recall the VA7 version 2 was improved first over the VA76.....before the VA76 was upgraded..
The G70 can also be upgraded to the specs of the E80[software]..