Where do you find Risk Legacy in that deal, I don't find any mention of it on that site? Or do you mean it's another game with "legacy" in the title that you already own?
As to We Didn't Playtest this at All - I played it once with my regular group, but it was a bit too quirky/silly for them. I didn't mind it so much, but I did sorta feel every moment playing it that my time would have been better spent playing someting else.
The one I own is doesn't have "Legacy" in the title. They are releasing a new one that, similar to Risk: Legacy, will change as you play. It's clearly meant as a
homage. In fact, one of the Risk Legacy designers said he's hoping to see it at GenCon.