Just to be precise, while his feat is incredible, you can't really make this correlation with the WR in 200m (any age), and even less use the absolute difference. The main reason is that the pool of people able to participate is way smaller as age increases.

Also, you are using outdoor times as a reference (the best time for indoor 200m is 19.92, Frankie Fredericks). Frankie Fredericks is the only person that ran 200m indoors under 20 seconds.

And I am extremely impressed by the feat that this man just did; most people would be happy to just reach 95; and those that do reach 95, being able to walk.