I think there's more than meets the eye here. The OP didn't receive the drivers from WU. Instead he downloaded them from Wacom, suggesting they're not Windows

I think there's more than meets the eye here. The OP didn't receive the drivers from WU. Instead he downloaded them from Wacom, suggesting they're not Windows Hardware Certification Program certified. And that's probably because amongst other things, the driver set is reporting touch inputs where there are none, perhaps for some specialized Wacom case/use. Had these been certified, I believe the OP would have received slightly more useful mouse-specific tips.