So, this may seem like apples and oranges here, but my experience with dynoing dohc engines, where changing lsa is easily done on back to back pulls, shows that THE most important cam timing event is intake centerline. It doesn’t matter whether it is NA or boosted/ nitrous. LSA on these engines seem to have minor effects when in normal ranges when NA. Much more pronounced on nitrous, a bit less so on boosted(turbo) never tried a supercharged example.