The agent said that they would have caught that when they went to look it up anyway. The Brammo page on the 2nd year warranty (
here) mentions changing their VIN database when you purchase the extended warranty so I'm guessing that is what they look up and that is where they would have discovered the model discrepancy. That warranty is only available to CA Enertia customers and is specifically for the purpose of qualifying for the CVRP rebate.
The main thing is that it is written such that all motorcycles appear to need to submit warranty information (and battery info if they are lead-acid based), but it doesn't appear to be needed in practice due to the VIN database cross referencing.
Also, I might believe that they were giving just any Brammo the rebate if it weren't for the fact that Brammo had to introduce a very targeted 2nd year extended warranty just for CA Enertia customers so that they could qualify for the requirements.