Can One Tell The Difference Between iPad 2 & the new iPad?

Harrison Webster on a test to see if new iPad owners could tell the difference between theirs and an iPad 2:

But the fact that the resolutionary improvements aren’t so distinct goes to show just how powerful Apple’s marketing arm is.

The Apple Marketing Arm hasn't even kicked in. Maybe in the US, but here in Canada I have yet to see a commercial, billboard, or magazine ad.