It sure says something, but not in this case. You say it yourself: "...although less planes are involved in accidents...".
We are here talking about the individual risk that is involved in flying. This has nothing to do with the amount of persons that die in a plane crash. For me as person, it is only interesting how big the chance is that I am involved.
You could say that with new developments as the A380, the chance that a large amount of people die during a crash is bigger, but what has that to do with the individual risk?
I totally agree with you that airlines should not base their safety record on the miles they travelled, but that brings me back to my original point: The risk should be based on the amount of flights and not on POBs, time or miles travelled.