No they are not the same. The evolved belly pan has a much more round contour, the Gen II is more flat.
In addition to what you mentioned, there are also black, blue, and purple skid plates for the Gen II.
You have a '99 XC 700? That's with the white hood, so I'm guessing you're really hoping to find a blue skid plate? Here's one:
A forum community dedicated to snowmobile owners and enthusiasts. Come join the discussion about performance, racing, troubleshooting, trails, maintenance, riding tips, modifications, classifieds, gear, and more!