People don't like it when I combine the PC and 360, so here's just the 360. Sorry PC fans, not enough data.
1. Note how Microsoft is the only one of the big 3 without a huge sway over their own platform. Admittedly, it's a nice slice of the pie, especially for just one game, Halo 4, but this illustrates how dependent Microsoft is on 3rd party support.
2. Most of 2K's points come from a single title, Bioshock Infinite. Despite also appearing on the PC and PS3, the 360 version is the most popular. Likewise, the 360 version of Borderlands 2 is tied with the PC version and is ahead of the PS3 version. 2K's only game to only show up on the 360, XCom, has a measly 2 points. This suggests that even the 360's biggest publisher save for Microsoft themselves is not particularly tied to the system, but has a good portion of its fans there.
3. Take-Two's slice is mostly points for Grand Theft Auto 5... which is tied with the PS3 version. Capcom's Resident Evil 6 is another multiplat title, but at least it does better on the 360 than the PS3 and PC. In fact, this seems to be a recurring theme. The 360 is essentially the PS3 minus half the games and with Halo 4 and Witcher 2 thrown in.
