Kinda anyway, follow along.
If you know this I'll throw it out so others reading can learn a little something.
The below is very generic and quickly typed so don't take it as 'Gospel.'
Overlap, as you know, is the prime factor with reversion.
It takes a lot of time to get a valve off it's seat and especially a valve back down on it's seat. This is where a lot of overlap comes from. Look at the 60's camshafts ! 330 + degree duration on factory Hot Rod motors.
Times have changed. Companies can make cams with much less seat duration while still giving more duration at higher lifts.
So, given the same seat duration, the cam with more duration at .050" and duration at .200" will typically make more power everywhere. Why? It will have the valves open at meaningful valve lifts (where air can flow enough to fill the cylinder) longer than the slow opening/closing cams that waste more time at no/little air flow lifts.
Whatc out though, many cam companies use different lifts for their 'advertised durations.' many use .004" lift while some companies like Comp Cams use .006" lift which makes the cam look faster opening/closing than others.
So, that's why we are finally seeing values at .200" lift. Years back, the industry finally started publishing .050" duration so that cams could be compared better, but now with the .200" lift (in addition to seat and at .050")we can start seeing a better picture of what their profile is like.
In all honesty - we would be best off to see the whole lift range/duration but that would make it too easy for other grinders to copy.