The fact remains that there is a clear bias for certain genres.
Evolve, marketed by MS, 50/50 in the UK. Witcher 3, marketed by MS, 60/40 towards PS4.
Battlefield Hardline nearly 50/50 in UK and sold more release month on XB1 according to NPD.
Motal Kombat X; PS4 61% XB1 38%, another well known genre bias.
Dark Souls 2 debuted at #15 for PS4 and #22 on XB1 in UK, despite Bloodborne coming out two weeks earlier on the PS4.
Borderlands charted higher for XB1 in the UK.
Final Fantasy Type 0 PS4 (78%) vs XBO (22%) in UK.
And sales between console is irrelevant as their user bases are not equal. Even more so if you're going to limit it to one region.
What I posted was the top 20 titles on each platform. Meaning those were the most popular titles on each platform. Worldwide. Not in the UK. Not in N.A. Not in Spain. Not in Germany. But worldwide. Something that is likely more representative of all users of the devices in question. For example, it's highly unlikely that Forza 5 was the 9th most popular XBO title in N.A. However, when looking at the worldwide XBO userbase it was.
For shooters. Battlefield is exactly as popular to XBO users as it was to PS4 users. Both were the 11th most popular title for users of those platforms. Destiny is exactly as popular to XBO users as it was to PS4 users. Both were the 4th most popular title for users of their respective consoles.
The only outlier was COD. But here, notice a trend. COD: Ghosts is the 6th most popular title on XBO while it is the 8th most popular title on PS4. A clear preference for the XBO userbase. But move on to the newer COD: AW and it is number 1 in popularity among XBO users while number 2 in popularity in PS4 users. COD is now almost as popular to PS4 users as it is to XBO users. And now that PS4 has the marketing partnership with Activision, I'd be willing to bet that the next COD will be either as popular on PS4 as XBO, or that it will actually be more popular to PS4 users than XBO users.
Looked at in terms of sales. This means Battlefield sold more copies on PS4 than XBO. Destiny sold more copies on PS4 than XBO. COD: Ghosts might or might not have sold more copies on PS4 than XBO. And COD: AW has a very good chance of having sold more copies on PS4 than XBO. But that doesn't mean PS4 is the console of choice for shooters because shooters sold better on PS4. It's just a consequence of PS4 having a larger world wide install base.
Other than that. You don't have anything that is directly comparable. Halo MCC: is 3 games in one. KZ: SF while pretty is generally considered an average shooter at best. And Titanfall if it had been multi-platform quite likely would have been similarly attractive to the userbases of both platforms. Titanfall 2 which will be multiplatform will likely have the same popularity on each console.
In other words, the tropes of the past are less and less meaningful as players migrate from one platform to the other over time. Even more so if you focus on multiplatform titles that are available to users on each platform. Exclusives cloudy the waters because they aren't directly comparable.
Regards,
SB