Actually, ELO rankings done blinded on models do vary: https://the-frontier.app, that said, your point looks accurate as far as 5.3 - 5.5 on this chart, 40 to 50 point ELO gain.

I find I have to argue with 5.5 less than 5.3, and I therefore use it when I could reach for 5.3, but I don't think it's a major difference.