No you simply inferred that.
It's your right. But it doesn't indicate anything except your bias against an oil that doesn't carry your beloved stamp of approval. I'm sure you didn't even read the fine print.
From API website:
All samples undergo elemental analysis, viscosity at 100°C, and high-temperature/high-shear testing. They MAY also be tested for cold cranking, pumpability, volatility, gelation, foaming, filterability, flash point, and shear stability. Product packages are checked to make sure they correctly display the API Marks and carry product trace codes. A number of oils also undergo actual industry engine sequence testing for oxidation, deposits, sludge, varnish, and wear.
So many of the oils have simply been very lightly tested. Most hardly at all! Hmmmm, seems like a highly credible system of certification to me! Confused?
But in my world there are MANY vehicles. Not just one or two.
All my anecdotal evidence is based on the dozens and dozens of service trucks we buy brand new and run into the ground. We have done this since 1970. Not including my personal stable, which runs from 4-15 or so vehicles, and runs from mild to wild.
This may be a significant number of cars and trucks, and our trucks are used as stationary power sources, meaning they may run all day long without a break. It's one of the hardest duty cycles imaginable and really breaks a motor oil down quickly. This MAY even constitute rigorous testing!!!
We no longer use Amsoil exclusively today due to its high cost and the other competitive oils on the market. But for someone who does not even use the product to criticize its quality seems a bit... confused?
Glad we're not as narrow minded as you. Or maybe you're just confused?