The 5c was a 5 in a cheap plastic shellWhile it isn't shocking it isn't usual either.
The iPhone 5c didnt outsell the iPhone 5, the iPhone SE didnt outsell the iPhone 6s. The difference is now the flagship (Xs/Xs Max) are too expensive.
The se was an updated 5s
The xr was a new phone.
Xs Max sold 16 million units in the first quarter and was third best selling phone during q2.
Guess apple customers don’t find it too expensive after all.
The xr and Xs Max dominated the sept 2018-sept 2019 phone season.