Because its irrelevent and this is the first time that anybody has ever made a big deal about a 5 week January.
They have existed before and people have compared years with a 5 week January to years with a 4 week January and its never been an issue.
All of a sudden its a huge issue because it puts their console at a "disadvantage"
what? to say it's irrelevant is highly disingenuous especially in a comparison thread about sales between ps4/switch, which only has a comparison for the first 2 months of the year so far. heck at resetera once they found out it was a 5 week period they raised all predictions by 125%.