Often you read that this or that masters runner ran a really phenomenal time, however what's almost always absent is the facts regarding their youthful potential realized.
If someone in High School or College ran a 4:21 and later as a 55 year old ran a 4:54, that would be great, but not so great as if they'd competitively trained and ran in High School or College and their times hadn't degraded as much as would have been the hypothetical case I just mentioned.
The reason I would find this sort of information useful is that it would give you an idea as to their real youthful potential realized vs their degradation over time.
As for me, I ran in track in High School, but wasn't good enough to get a scholarship and barely lettered with a 10:14 2 mile time (two 5:07's back to back) and my best 440 was 63 and best mile time was a 5:05.
I kept running and when I hit 45 I ran a 4:56 breaking my best time ever.
So I feel that in some ways I've gotten faster and better and though on a local level it's OK, it actually is more impressive than it looks because I sucked so bad in my younger days despite all the training (coached professionally that I had)