I think what really matters here is that you agreed that you made those two marks in the first two pictures and regardless of the other scratches your RMA would still have been denied.
Cut your losses and get a better 1366 board. My brother was able to find a RIIE on ebay for $150 shipped and that will run circles around your E758.
I would pay for the replacement if it was $60 or something. But $199 for a few scratches? The motherboard would've worked even if it had a few scratches on it.
EVGA obviously damaged my board further so it could warrant a replacement fee.