More hardcore gamer types on PS4? and more casuals on the Switch?

Yeah, I already saw that, I want to update on the weekend.

As for the weak sales, I was going to say it is a late port - but reading the answers I realise the game had (still have?) serious problems on Switch.

High quality port head to head released with the other version (not a late port).

Nah. We were over this often on VGC. Data shows that for most game install base does not much. Maybe for the FIFAs and the like, but usually not for the unique games. Gamers want the game or not. If they want it, they also get the platform for it, if they don't already own it. Therefore doubling the install-base of a platform affects the sales of a single game only about maybe 10%. It's the other way around: if 10 million Pokemon-players want the newest installment, they get the system it is running on.

Hmm, I'm not sure if the correlation is with the review-score. It seems certain types of games are affected. So as I pointed out Sports games are especially weak on Switch. Japanese games do pretty good though. Platformers do also pretty well on Switch. It does not seem for Rayman on first look, but as I showed with the cumulative graph it actually sells even ahaed of the PS4-vwersion, launch-aligned.

As for adding games: at the start the list was much shorter. I added each game, to have some bases for comparisons. But now as it starts to become more and more, I'm thinking of thinning it out. But based on what criteria? Any suggestions?

Good thing the game sold poorly on Switch then. Broken games deserve to sell poorly.

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.

Brilliant information.

Where are Wolfenstein, Skyrim and Fifa

All three games are there, although for Wolfenstein VGC has no Switch data yet, so it is only PS4 vs. Xbox.

I updated the OP with current numbers. Thanks to the VGC-team for fixing the problem hindering new data and get the numbers flowing again. I think you usually get too less credit for the work you do for keeping the site running.

This week was interesting, because it saw many new releases. In difference to the past, this consisted of releases head-to-head instead of late ports. So the first week data is actually more interesting. The games in question are the Street Fighter Anniversary Collection, Harvest Moon, Owlboy, BlazBlue Cross Tag Battle, The Liar Princess and the Blind Prince and Sega Genesis Classics. Aside from Street Fighter sadly the games all missing at least one platform. Sega Genesis Classics aren't coming to the Switch, the others not to the Xbox. Of the games only Street Fighter broke 100K, although the sales indicate that Harvest Moon should get there soon, and BlazBlue so far only released in Japan, the releases in the other regions should improve sales too.

This are the market shares for the games:

As you can see, the performance strongly differs from game to game. Street Fighter dominates on PS4, is strong on Switch and weak on Xbox. We have so far few data for fighting games among all three platforms, but this collection also thrives on nostalgia, so it is hard to conclude how the sales are influenced by these factors. BlazBlue gives some indication for fighting games, but keep in mind this so far is only japanese data and missing the Xbox. BlazBlue though shows a strong dominance for PS4 with nearly three fourths of the sales on that platform. Sega Genesis Classics can indicate nostalgia sales, but this is missing Switch. Here PS4 dominates even stronger with more than three fourths of the share.

Harvest Moon is interesting, as we have so far few games with the simulation genre among these platforms. No Xbox-release though only let's draw conclusions for PS4 and Switch. Here Switch takes the cake, with more than 70% of the share.

Owlboy once again shows the sales strength of Switch for Indies and platformers. Over 80% of the sales are going to the Switch.

The Liar Princess and the Blind Prince is a port of the Vita-game. As a japanese-oriented game it misses the Xbox. As many other games it shows that for publishers PS4 and Switch start to replace the Vita as the platform for japanese centric story driven games. The sales are interestingly very balanced between PS4 and Switch, nearly identical.

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I added a new graph to the OP. This shows how many games on each platform are selling more than 10%/20%/30... market share. It shows a bit the PS4-domincance in sales. I'll keep that updated in the future.

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I also want to show another interesting development in sales. The game BattleChasers: Nightwar (a pretty classic turn-based RPG) was released as a late port on Switch and shows there incredible sales strength. I think THQ Nordic is kinda pleased with these sales. In three weeks the Switch version already overtook the XBox One version and if the strong sales continue will not take long to catch the PS4 version.

Cool charts. I honestly though Switch versions of a few games would sell lesser than what these show. Considering many of them released at a later date than the initial launch and a lot smaller user base. PS4 as expected sells the most of almost everything which is not very surprising considering how many users they have.

Of the day and day releases Switch seems to do pretty ok after all. If we consider revenue for many of these late ports, I am sure that publishers in many instances are still pretty pleased with sales for some of the late ports. Fighterz is going to be interesting, while I do not expect the Switch version to come close to the PS4 version I fully expect it to be a big seller. Another interesting game will be Disgaea 1 Complete that will release day and day between NSW and PS4.

Well done OP.

Thought there had been an update on the OP.
But still the greatest point this show is that SW sales aren't that correlated with HW sales to people that still believe in constant attach ratios.