It has to revolve a lot around how many RPM and the camshaft used.
I see a lot of Big Chief BBC's with longer and more angled pushrods than 99's in fast bracket cars. The springs are checked regularly but milder cams allow some mileage from their springs. As soon as they find themselves in a max-effort class where they are spun near the limit like P/S, they eat springs with the best of them.