And if the vaccinated vs unvaccinated were even, that would be a weird way of putting it. However, in Wales "A total of 2,376,313 people have received a second jab, or 75% of the total population. That's 85.3% of the over 16s." So, yes, it is noteworthy that 25% of the population accounts for 33% of cases.
https://www.bbc.com/news/uk-wales-58680204