Ultimately all the upheavals caused by Covid over the previous 27 months have been about saving lives. The slogans might have been "protect the NHS" or "stay alert" but the whole point was to keep people alive.
Due to this is makes sense to measure the performance of the Welsh and UK Government's during the pandemic on the number of deaths. This might seem easy. Simply look at the amount of people in each area that died of Covid right? Well no. There are not only lots of ways to measure the amount of deaths, there are also really important disclaimers that come with assessing that data.