I guess we'll know when he posts something like the "Frogboys reasons to quit and never work again" thread.
But seriously, I haven't seen anything about the game in magazines or other media here in Germany; I actually saw the game for the first time mentioned on slashdot when it went gold. Without "serious" "media" coverage and shelfspace, it probably won't get so much attention; the top 10 placement on amazon.com (although impressive) could very well be the goldrush by 80% of the salivating masses here that didn't try to kill the order and download servers ten seconds into the day.
I'd say the figures get interesting when retail packages have been locally availabe in the rest of the world for some time, let's say in mid-april.