I ordered BotW on the last day of Amazon's 2 week 20% off thing for prime members thing. Would've liked to ordered w/ a Switch, but unfortunately that wasn't going to pass. Luckily, a few weeks later after searching various stores' stock, I lucked out and was able to get the Switch as well (Amazon as well, actually).

So depending on when these stats were put together, I could be part of the group putting Switch BotW sales above the Switch console and I imagine there are others who ordered similarly.