Back in the early to mid 1970s most of my cross country team bought Onitsuka Tigers, or, for a little more money (I think) Adidas Roms (I'll assume that was the name). Now, looking back, I seem to recall that my pair of very lightweight Tigers lacked padding and arch support. (Maybe that's just my current mind comparing those shoes from half a century ago to what I run in now, which is what I need to wear to ward off injuries in my 60s.) Yet we young guns didn't get injured much back then! The Adidas were of a white leather and were heavier, but still a step-up.
We were all thrilled with our Tigers and Roms. To us, they were supershoes, because we thought they raised our running to new heights, since we hit faster times. They must have helped, especially compared to what my high school coach suggested we run in -- Converse Chuck Taylor basketball shoes! He put it in writing in his self-penned runner's handbook we received prior to each XC season.
I imagine there must be a psychological aspect to wearing the latest and greatest shoes, now and then. (The physiological benefit of better shoes, borne out in improvements vs the clock, is a no-brainer nowadays.) Reminds me, in a way, of what girls and women have said about bun huggers -- that when wearing them, they often feel faster.