The interesting thing about some of their peaks is that Supergirl peaked at #25 on the iTunes pop chart when it was randomly released as a stand-alone single thanks to the commercial that was airing. It was super close to entering the top 100. Play With Fire wasn't release to iTunes till TWO months after the video premiered and peaked at #19 on the iTunes pop chart. A mere position away from entering the top 100 on the regular chart. Now-a-days, it's not rare to see the top 40 on the pop chart in the top 100 of the regular chart.
Stranger's iTunes peak gets to me because that SYTYCD performance brought it up so much, and if it had just gone to radio in early June and had some radio push, it may have had a much higher peak. Also, the fact that she didn't perform on TCA's when she was hosting. Stranger was done SO wrong, it didn't deserve that poor treatment. It just didn't.
