Lol, it's not a fluke, it's objective. Remind me what is the year number of PS4 for 2018 again?
This is the correct one straight from their earnings reports:
Nintendo - 12.22 billion USD of operating profits from 2017-2020 FY17/18 to FY20/21
Sony gaming division - 10.98 billion USD of operating profits from 2013-2020 (less a quarter compared)
Those numbers operate from FY17/18 to FY20/21 for Nintendo, we have 5 FY earnings to consider not 4, not 3. Also that Sony numbers are from 2013-2020 only, so Sony numbers are off for one quarter, the numbers from Sony should be higher than that.
It doesn't matter though, Switch in its current lifecycle had already beating PS4 around half the time for their operating profits.
Your comparisions of 2013-2020 in a company vs other in 2017-2020 don't make sense because they also have other consoles (portables, previous consoles, mobile, vr). In any case it would make a bit more sense to compare both companies -as a whole, not counting as it would be only for a console- in the 2013-2020 period or both companies in the 2017-2020. Or a bigger period or per year periods. But again, wouldn't still make sense because their predecesors, portables or mobile would be affecting (plus multi platform services or accesories like VR, Amiibo, Labo etc).
But well, looking at this graph I understand why Nintendo fanboys don't want to include Nintendo's 2013-2016 years in the profit comparisions:
The closest thing you have to compare only 2 consoles alone is to compare is their hardare, software and maybe accesories sold (I wouldn't include services here because they are mixed with other consoles like PS3, Vita or 3DS):
(Since March 2017 until December 2020)
Switch Hardware: ~80 million units
Switch Software: 532 million units
(Since November 2013 until December 2020)
PS4 Hardware: 115 million units
PS4 Software: ~1.5 billion units
And maybe to be more accurate to make compare them launch aligned and aligning their quarters per fiscal years to align the bump each console has with the Holidays season etc because weren't released in the same part of the year so if you don't align them per fiscal year every few months one or the another get a big bump compared to the other during some months. Which at the same time wouldn't be too fair because by doing that the covid bump would be included in Switch and not in PS4.
Is this why TLOU 2 bombed?
As I remember it was the best selling PS4 exclusive of the year in a year with exclusives like FFVIIR or GoT, it also was the fastest selling PS4 exclusive ever and it won more GOTY awards than any other games before and a 93 metacritic. It sold more than GoT, which untils this month sold 6.5M units. It should be around 8-9M units sold and will continue selling (has the MP coming, possible PS5+PC versions, who knows if a single player DLC too, more sales/price cuts, etc), so it didn't bomb at all.