The heat test was at 191C or 375F. Way hotter than any real world usage. If your bearings are running close to 400F, you got other problems than grease. Is the ST grease even rated that high for temp? I see 300F for ST grease. Lucas I see rated at over 500+F. Lucas is just higher temp rated.
Notice at near 400F, the super extra deluxe tacky red Lucas wonder grease never moved at all. Meaning poor lubrication after one rotation of a bearing or one wiping away of lube. Shows again what I was talking about.
You are looking at it like since the Lucas didn't move it isn't providing lubrication. I see it as the Supertech is no longer lubing because tt has broken down and has been flung out of the bearing. But you are also dismissing that the Lucas had a smaller wear scar, higher resistance to water, lower resistance in rotational force during cold than the Supertech.
I am not saying that the Supertech is a bad grease, and could be adequate for your applications, But for my overall use the Supertech doesn't meet my operational requirements. If I want to repack my wheel bearings the Supertech doesn't meet the temp requirements unless I go to the red Supertech grease.
A few years ago I did use the normal general purpose grease, due to changes in applications had to upgrade to using red grease.
And last year due to another change in operations had to add urea based green grease to the circle. And the green is not compatible with red or general lithium based grease.
But since the new red n tacky is calcium sulfonate thickened and not lithium soap based things could change.