Does iOS 10 makes apps taking more storage than iOS 12?

On my iPhone 6s Plus which has iOS 10, the game "clash royale" takes 800MB but on my iPad mini 2 which has iOS 12 it takes only 190MB. Btw, my clash royale account on my iPhone is the same account on the iPad so it has the same data in both, and I usually play it more on the iPad than the iPhone so howcome it takes more MB on my phone? Probably 'cause my phone has iOS 10?

Thanks :)