Good find!
Externally the unit looks the same, but there are several differences in the specs.
The one on the Vulcan is bigger and consumes more power. The thermal sensor is also better, with higher resolution.
In my opinion it is possible that there is a more advanced version of the Dragon Eye, which is better for guns of a higher calibre (like the 20mm Vulcan).
If I remember correctly Elbit does make simpler and superior versions of the same product to give more choice to their customers.
Yep, I think you got it. I was a bit surprised at the 1 km recognition performance on the Thermal Channel and 2km max for the LRF when the Machbet can detect up to 6km, so its definitely has to be a more powerful variant of the Dragon Eye (probably because the M163 could carry a bigger battery pack to power said electro-optics).
The Machbet needs longer detection and recognition ranges because it primarily uses Stingers, which have a much bigger reach than the Vulcan cannon.
For the IMI Super Vulcan those distances are a bit short but somewhat acceptable, unless they use APDS.
Upgrade of what? Tracking radar has only been replaced with a passive tracker. 7.7 is completely fair for such a small upgrade.