Just had to do a double take to make sure we were looking at the same chart.
This has been pointed out in the thread already, but here we go. You have a basic understanding of ELO right? if someone wins there ELO goes up? Right? Still with me? If Zerg is suddenly buffed and players start getting boosted up, their elo will increase as they start winning more. This graph and your analysis assumes that they will still have a lower ELO than the people they are now evenly matched against. ELO updates to reflect this change.
So what about the top end? Surely, the best of the best will now win so much more that they will drag the average ELO up, right? Well, no. ELO graphs are asymptotes. They give the top players increasingly stringent point increases for repeated wins. This prevents the top players from dragging up the average. Why? Because ELO was NEVER DESIGNED FOR ASYMMETRICAL GAMES They were designed to compare one player to another player in a mirror match! This has been talked about in the thread you link, and mentioned ad nauseam, but not responded to with any defensible argument.
But not to fear! Some people did design a system to overcome this problem! Even better, you get all you stats from them! Behold:
http: //aligulac .com/misc/balance/
Dota, LOL, SC2, OW, virtually any competitive asymmetrical game uses some form of adjusted-for-asymmetry algorithm. You chuck them all out the window, because they adjust for race and therefore don’t provide the predetermined results you are so thirsty for.
Pick any one of them, so many are publicly available on the stack exchange, and use them to find results. Really, we know you won’t! At no point will you acknowledge that any of these very successful game designer know how to balance better than you, and defer to their tried-and-true techniques.
It doesn’t matter though. Blizz looked at their data and determined Zerg gets nerfed next patch. You seem to insist Blizz is wrong here, which is fine, but then provide evidence for your claim.
So I say once again. Provide proof for your claims! Put up or give up.
Edit: Magical internet fairies told me Dota abandoned their adjusted algorithm and now goes exclusively by win rate. Really cool to learn that players figured out the formula early on and abused it to boost their mmr. I imagine LoL may have also had a similar problem. It doesn’t matter because Batz won’t accept exclusive win rate either as it still makes Zerg look too strong.