Mnementh on 18 June 2018
OK, updated the graphs in the OP.
South Park has now data for all three platforms. Actually it has already 2 weeks of data for Switch, as today the new charts were posted. As a late port just released South Park has a low percentage on Switch, but it sold actually bad too. If I compare just the first two weeks, than the Switch version lands at 4.2%, so expect that as goal for long term.
As Kyuu recommended, I removed low-selling games, but only sub 100K. I dind't wanted to lose too much Indie-games. If more games reach all three platforms, I may make this stricter. Because of this sales-barrier I removed Sonic Mania, Scribblenauts: Showdown, R.B.I. Baseball 18 and Wonder Boy from the graphs.
Essay Pro