OKI was simply making the point that we don't know what is better or not (a general comment), they aren't using approvals, not really a big deal but that doesn't always mean better was all.
Could also mean they changed suppliers of one component or more, because NLA, or almost exact or BETTER component is less $. Various reasons, and yes we don't know exactly.
My point is no oil company will tell us exactly but this seems like more than most tell you. HPL and Amsoil and maybe a few others will tell you they are truly changing formulas. The big guys? Sometimes, they say they are changing, new bottle and everything. But maybe not the formula, OR they never tell us they change, we find out later.
All good.