Clearly PS4 is outselling Xbox One in the UK and this is represented in the charts, but pointing to number of exclusives in the top 40 is a bit silly. Neither Sony nor Microsoft have many exclusives lighting up the charts right now. Microsoft should be more worried about the split of multiplatform sales.
Not necessarily, because I believe they had more (console) exclusives and a greater/stronger hold over platform splits this time last year than they do so today.
Perhaps I phrased it out of sorts, but I believe you got the wrong end of the stick with regards to how - and why - I mentioned Forza Horizon 3 and PUGB in the first place.
I actually edited my original post (before you posted) BTW! I was mostly looking at the overall chart as well as the rather big platform split for the top two games. Forza Motorsport 7 abruptly disappearing out of the top forty altogether is a bit of a surprise to me too.
I will say that we are definitely on equal footing with your last sentence though, that Microsoft should be more wary about the split of their multi-format game sales going forward.