I've often seen pretty large discrepancies depending on where it's pulled but 100 points seems extreme. There have been some changes within the last few years and it seems all credit scores are not created equally. I recently checked from a link one of my cards was offering and it came back at 835 but on my Identityguard monitoring I was just in the high 700s for each bureau. Still, 100 seems off unless you've recently made some substantial changes that haven't been picked up by everyone.