Different rates per ad on Android vs PC?

Hello, this month (november) I have received 43 ads on my mobile, and 14 ads on my laptop browser. The BAT earnings received (estimated) are approximately the same: 0.257 BAT for android vs 0.248 BAT on the laptop.
Why this difference? Do ads have a different pay rate depending on the platform?

Please advise, thank you

12 days on, this issue continues.