Road shoes worn too?

Today I did a gentle 2.5km to test the relaxed legs. A quick examination of my road shoes revealed an issue there. I have 2 pairs of Saucony Grid shoes whose age is unknown, perhaps 10 years? A notable feature is that 1 pair, which I suspect to be the newer, show considerable effects of pronation.

I decided to go out in the apparently less-worn shoes even though the EVA might be harder. I think it's time to try to load my knees consistently. 

This was a slow, gentle jog with mild ascent and descent but went well with no knee pain. A very small twinge from the insertion of quadriceps but that's a step forwards, if you'll pardon the pun!

It's coming up roses?