This is just an "opinion", but it is an opinion based on knowledge. Sure, there are more ways to skin a cat than just one. I don't remember reading if the question was directed at a hyd, or solid. Way different error factors there. You might not see any difference in the numbers on the Dyno with different syles of adjustment. But, the most foolproof way is to ensure the lobe is on the base circle of the cam. That takes the potential error of a high duration cam out of the picture with doing them on top dead center, or worse yet 8 at a time. I personally would never do 8 valves at a time on any cam with any duration. But hey, that's my opinion.
Dan