Please look at the chart for average Beyers by age. There is a very gradual (almost imperceptible) decline from a horses peak at 4.45. And that is just the average. For a 6YO to be at top form is well within the standard deviation. An exceptional horse can even go beyond the standard deviation.

The horses TG figure shows that the horse can and did run this figure. If you don't believe that, then complain to JB about his figure.

The post I was responding to is that that a 6YO horse is like a 55 year old man. totally not supported by the evidence.