Doubling or tripling their estimates in general is nice, but I also hope they're looking at it on a case by case basis too. A lot of the craze (maybe even most of it) over the FE amiibo is definitely fueled by the fact they're so hard to get, but they underestimated demand for those to the point where two times or three times the stock would only make a negligible difference. The TRU I went to for wave four had 100 Greninja (better than Lucario, so at least that's something), enough Charizard that I was 50-60th in line and got him... and literally two Lucina/Robin. That's somewhat misleading since Greninja was a TRU exclusive and Lucina/Robin were spread out over all the retailers, but the story's still the same; unless you were one of the handful in line first, there's no way you were getting either one at any retailer
Also, the TRU restock in Canada has been laughable. They happened out West first and by the time they hit the East two days later, everybody knew what was up. You either camped the store all day until they opened the boxes and instantly cleaned them out of all the unicorns, or you got nothing.