But they are engaging in the same miscalculation and misrepresentation I have already illustrated.

The raw ratio of the two groups does not result in the effectiveness of the vaccine. This is whether Phizer does it or some kook anti-vaxxer. The size of the groups depends upon so many other factors that these calculations and graphs are useless.

Excerpt from your article:

However, this calculation was based on the exact calculation used by Pfizer to demonstrate that their vaccine had an alleged effectiveness of 95%.

U = No. of Cases among the unvaccinated
V = No. of Cases among the fully vaccinated
U – V / U = Vaccine Effectiveness

However in order to calculate the immune system performance we need to perform a slightly different calculation that divides the answer to U – V by the largest of the number of cases among either the unvaccinated or fully vaccinated.

Therefore, the calculation for a positive immune system performance is –

U – V / U

Whilst the calculation for a negative immune system performance is –

U – V / V