Wow even after that other post has been deleted you can't let it go, your obsession has past borderline creepy and is now frightening
In this post you have taken the word of people that have not used Foxx as wins for your argument, you say this is quasi scientific, how can someone who's never used Foxx know if he's worth it or not? Seems like because it matches up with your viewpoint you're willing to accept it as fact even though someone who's never used him can't really say if he's worth it or not.
To answer your question worth is subjective and always in the eye of the beholder, is Foxx worth it for guys like Mitch and myself who have millions of stubs and play at the top level of this game against the best? Of course. Is he worth it for someone like you that may only have 40 thousand stubs and would have to mortgage your entire team to get him? maybe, maybe not. Is he worth it for someone that has maybe 500k in stubs but is comfortable with the level of their team and has nothing to spend stubs on? I would say so.
While I can't give you my exact ops with Foxx because again, not home, it's somewhere in the 1.2-1.3 range.
Now let's talk about those players you mentioned
To start with, you listed a lot of primary 3B's which Foxx is a 1B with a 3B secondary, the 3B's you mentioned have better defense outside of Cabrera because third is obviously a more defense heavy position then first.
but let's look at the players mentioned on a deeper level.
I bought Arenado for 75k when he first came out, Pujols I got free from the inning program but I bought the other 2 from that program at 120-130k
Bellinger when he came out I bought for 150k sold another for 150k
Cabrera when he first came out was 30k now is under 10
Donaldson 100+ now 30k
Gehrig at 91k is somewhat close to his value that he had when he came out.
I bought Foxx 3 weeks ago for 392k his sell now value now is 540k his buy now is 698k, the last 2 completed sell orders for Foxx are 655k and 699k, players like Foxx, Posada are the few in this game that actually gain value instead of their value tanking with every new card that gets released. That alone from an investment side of the game makes him worth it. To sell right now at the very worst I am making a profit of 100k and at best am making a profit of 236k. Instead of losing 50k on someone like Arenado and Bellinger.
You say "locking in stubs" for Foxx but players like Foxx, Posada, Gagne, you don't have to lock in ever and remain liquid, while gaining stub value. Players like Arenado etc that are available to everybody always lose value.
This all to say nothing of the psychological advantage you have when you are able to roll out: