One coudl look at it like this...
Matt has defeated the aging process by 2 years.
If he was 60 and still doing the sane number of reps/weights he was doing at age 50, that would be a victory, right?
of course, some could argue there is a point where one should be aiming to progress (maybe until age 40 or so?) then after that, you're fighting the digress. Who knows.