Ok, so I found the mistake... @trunkswd
In installbaseforum, Switch YTD for 2021 is 400.000, but in Gamereactor said that total for the 2021 will be 430.000 units.
I have data missing data for two weeks. In total ± 30.000 units off
https://www.installbaseforum.com/forums/threads/the-pal-charts-aggregator-thread-for-week-50-2021-a-tale-of-emergency-meetings-and-being-s-dishonest.394/#post-27617