I note in passing that, if this is a reasonable description of forecast accuracy, it suggests that the configuration of the inflation target is a pretty good one (though I hasten to add that, when it was first set out, we did not really have a great deal of confidence in the accuracy of inflation forecasts).
It would, in my judgement, be vastly preferable for discussions of forecasts to be couched in more probabilistic language than tends to be the case in practice, and for there to be more explicit recognition that the particular numbers quoted are conditional on various assumptions.