Back in November, AppLovin.com reported a China iPhone 6 to 6 Plus sales ratio of 65 to 35 and a US sales ratio of 80 to 20.

In AppLovin’s latest report, the China ratio moved to 60 to 40, while the US ratio changed to 75 to 25.

Why is this important?

Morgan Stanley ran an estimate of gross margin of the various models of the iPhone 6 versus the iPhone 6 Plus and found the iPhone 6 Plus profit margin to be higher across the board. More iPhone 6 Pluses in the sales mix means more revenue for Apple.

Note that these numbers represent aggregate sales (the mix of all phones in the market, versus only the latest sales). This means that the mix of more recent sales is even higher (to bring up the average). Bottom line, this is good news for Apple, ahead of Tuesday’s FQ1 results.