Okay, so as I was trying to max out the Gearbits on my Dark Hot Streak and encountering the "gearbit corruption" issue mentioned in #6 at the moment. However, I discovered that while my Jet Stream and Dive Bomber are being ID'd just fine, it's seemingly not detecting the Weapon and Shield levels correctly.
As an aside, I'd also like to mention that the editor doesn't have any way to edit the vehicle level used in SuperChargers Racing on 3DS and Wii. Hegyak's probably already looking into that, but I figured I'd bring it up here in hopes that they'll be able to provide an update on that front.
I've got a ZIP with dumps of my Dark Hot Streak, Jet Stream, and Dive Bomber vehicles from Pyrofer's Skylanders GUI Tool alongside a text detailing what I've been seeing between in-game and the editor attached here. If I need to make dumps with a different tool, just let me know.
Skylanders Vehicle Dumps.zip