That is, if we count the fact Psykorochi absorbed some of Saitama's power in order to become so strong.
The final villain is still Monster Garou and ONE said Garou vs. Boros would be an either way. Garou iirc trashed the hero association including Tatsumaki and Golden Sperm.
Like i said in another post, all she’s good for is spamming energy blasts, low to no mobility and significantly less durable. Boros’ regen is extremely high level if it weren’t for the serious punch even Saitama wouldn’t have gotten past it seemingly, and he’s significantly faster than both Genos and Tatsumaki.
The country slicing attack doesn’t seem so casual now, she has shown nothing above it so far, and she’s in a fucked up state, while Boros caps far higher than country level, or continental like some want to high ball her. She is not above or on par with Boros neither via feats or portrayal.