The other is a solo game, the multiplayer version of it (not intended to be a MMO) is nowhere near ready after 8 years.
I believe it was actually
you trying to compare bugs in a solo game and a MMO one. Either way I am afraid that logic does not work here because neither the MMO part of SC nor the solo SQ42 part seem to be anywhere near the level of the top percentile reviews CP is getting so far.
But if you prefer, and to make it even more simple, we can park the MMO side for a minute: SQ42 was announced to be released first in 2016, then 2017 and now a beta in 2020 (and that without counting the original CIG Kickstarter estimates for 2014 and then 2015). CP was originally announced for April 2020 then delayed to November and finally released in December 2020. As such both projects have a very similar trajectory in time and are perfectly comparable. One has been able to progress it to release and great reviews so far, release bugs included. The other, well, has not.
Based on what we can see SC/SQ42 is still stuck in abysmal performance and stability issues, and significant and frequent bugs that break the game with just a "done when it´s done" to show for it after all the missed timelines. CP on the other has been released, and even with its usual release bugs is more than playable, it is actually getting great reviews.
Now you can probably try to argue that since we have not seen practically anything about SQ42 that there is a chance it may be in a really good state, but I presume not even you would believe that given the state of the parts we can actually see.
The issues, bugs etc of SC/SQ42, and its scale and impact, is orders of magnitude worst than whatever issues can be found with CP at the moment. The severity of the critiques needs to be scaled accordingly and it is very simplistic and disingenuous to just try and demand the same level of criticism as you seem to be doing.
I see this a lot among SC backers though, so it is not surprising. More often than not backers see other projects issues, as minor as they may be, as validation for the "normality' of SC. They obviously forget, or choose to ignore, the scale and impact dimension of the issues. Memes usually come in very handy for this fallacy exercise.