Yes with equal dose
before the third dose it's less effective, but why would one compare the two vaccines based on number of dosis to get effective?
Back when there were fewer variants, the Janssen vaccine only required 1 dose; was Janssen "better" than mRNA, and did "mRNA vaccines not work very well"?
Here in the Netherlands, once Omikron arrived, the Dutch CDC advised everyone to get a booster (third dose). Nobody here counts on Pfizer having enough protection with just 2 doses. Why would anyone then compare 2-dose Pfizer with 2-dose Sinovac?
What matters is the eventual efficacy after sufficient boosters. Besides, we already live in a "booster subscription" reality. Here in the Netherlands, the elderly are encouraged to get a booster every 3 or 4 months. In light of all this, I'd say it's very disingenuous to compare based on number of dosis instead of eventual efficacy.
And you say "even [after 3 doses] it's significantly worse than Pfizer". Where in table 2 do you see that?
Severe/fatal disease:
- Three-dose BNT162B2: 99.2 for 60-69 yr, 99.5 for 70-79 yr, 95.7 for >= 80 yr
- Three-dose Coronavac: 98.5 for 60-69 yr, 96.7 for 70-79 yr, 98.6 for >= 80 yr
Mortality:
- Three-dose BNT162B2: 98.9 for 60-69 yr, 96.0 for >= 80 yr
- Three-dose Coronavac: 98.7 for 60-69 yr, 99.2 for >= 80 yr
I'm sorry, these numbers look nearly identical to me? They're all >= 96% for the elderly.
I think you're looking at the "mild/moderate" section. Yes the numbers there are lower for Sinovac. But so what? Protection against severe/fatal disease and mortality is the most important. That it's less effective at mild/moderate disease prevention doesn't make "Chinese vaccine don't work very well".
Heck if we go back in time before there were so many variants, various studies showed Sinovac as having roughly 70% protection against mild/moderate COVID (depending on country; efficacy is context-dependent). That 70% was then branded by western media as "Chinese vaccines are junk, they don't work at all, because our mRNA vaccines provide 90%+ protection against mild disease". And now Pfizer has only 70% protection against mild omikron but it's still represented as "mRNA vaccines are much superior, the Chinese are fscked until they get their hands on mRNA". Yes, what's wrong with that narrative?
For some reason, outside of the context of comparisons with China, everybody agrees that Pfizer works kinda "meh" against omikron; it's merely "good enough to get the job done". But when comparing with China, all sorts of people are suddenly inclined to represent mRNA as the holy grail that can end the pandemic, which the Chinese unfortunately don't have.