How would any outsider know? Yes, the die size is smaller by roughly 16%. However, the dies run at very high frequencies so not every "electrically good" die that comes off the back end of the line might make it eventually.

The fact that there are no reports of dies blowing up in PS5s would indicate that additional die tests are performed with possibly some small % failing. Sony chose its production numbers and MS chose its production numbers. As to its sizes, only the two companies know the answers. Looking at curent numbers, both companies seem to be hampered by general semiconductor shortages due to Covid restrictions. This could be anywhere from SoC chips (unlikely) to ram chips (possible) to simple smd components like shunt resistors and capacitors (alsopossible). Also NVidia, AMD and bitcoins aren't helping, either.

In the end, the market gets what the companies get, and in these time these numbers are considerably lower than usual.

I get that demand is obviously lower for Xbox, but with Series numbers this low yet the Series X at least apparently all sold out, it just seemed striking that the current numbers were all they could muster, unless they're not even trying to meet demand and just figuring they'll cruise on hardcore early adopters for the moment and make more consoles once they start getting some actual games out the door.

Both PS5 and Xbox are selling similar to PS4 and One because they are supply constrained, don't really see how that's surprising or anything. Daniel Ahmad already explained production got hit by Covid.

Then how come Nintendo Switch is not supply constrained? 

Switch doesn't need the chips both PS5 and Xbox need and that are suffering shortages because production has been affected negatively by the pandemic: https://www.barrons.com/articles/chip-shortage-spells-trouble-from-cars-to-game-consoles-51612996675

So basically production of Switch can be higher.

Oh. So it is very similar to what the Switch experienced in 2017 but without the pandemic. Where some people claimed it to be artificial shortages. 

To an extent it is; apparently the base model is sold out in a lot of major stores in Japan recently.

In Akihabara’s Yodobashi mega store again.

Nintendo Switch in both color variations and Ring Fit Adventure sold out today. https://t.co/sB1vdIWkym pic.twitter.com/c9mPGZr1Ew

— Dr. Serkan Toto / Kantan Games Inc. (@serkantoto) February 13, 2021

Pretty awesome when you think about what's happening here, the Switch is coming across both as a very popular Nintendo Handheld and a Nintendo Console and it's got the sales of both combined into one unit, the added bonus of this popularity for the end user is that the system has all of the would be games from both those potential systems now pooling into that one ecosystem of incredibly happy gamers so the growth is exponential. Compare this to previous generations where someone would either buy a 3ds or a WiiU but always miss out on the potential that a good game would come to the other system, now you can buy the Switch with confidence that you'll have access to all of Nintendos library of titles as well as a handheld and home system for all your titles. As someone who would have previously bought both home and handheld systems this gen of Nintendo machine has meant tons more games for me on the one system to enjoy rather than a scattered library across 2 systems.

theres no other way to look at it. Xbox is going to fall way behind

Is there a chance PS5 could cross 200k next week?