[Mahler9th]

You can read all of the factual efficacy details from each study on-line. The manufacturers and the government have to provide these details as required by federal laws.

No need to guess or ask in Forums like these.

Remember, the numbers are reported based on the data collected in actual trials. The trial designs are also a matter of public record. Look carefully at the definitions of terms with respect to efficacy.

Of course as pointed out here by Sooner or later, virus variants were likely a "moving target" in the trials conducted thus far. So say there were just six (6) infections leading to six serious illnesses amongst 100 people that had a vaccine. There is likely no way to know from the trial whether all six (6) infections were from a particular strain or strains. You can find out for sure by reading the protocols, but I doubt any or many of them included identifying the virus strain that infected any particular individual.

In any case, I suggest accessing the information directly from the sources. They are legally required to report the details. No reason to guess or speculate.