Figuring out Stability Mechanic

[Starcake]

Hello all,

Recently, I lost my save and had to start all over again since I had to format my PC due to a windows bug, but I think I finally figured out how stability works, but I would need some help from other willing people too.

So far it all comes down to the final value of the stack weight, it doesn't matter the difference between their weight or if it follows a pattern, as long as the desired numbers are reached. From my experiences I found out that:

Total weight = 5 will always result in a "Weak" stability
Total weight = 6 will always result in a "Good" stability
Total weight = 7 will always result in a "Good" stability
Total weight = 8 and 9 (Untested) ???
Total weight = 10 will always result in "Average" stability
Total weight = 11 will always result in "Weak" stability
Total weight = 12 will always result in "Weak" stability
Total weight = 13 will always result in "Good" stability
Total weight = 14 will always result in "Good" stability
Total weight = 15 and up (Untested) ???


Those are the only numbers I could reach with my very limited collection of Mirages in this new game. If you came across any other result, please contribute so we can findally figure out this very poorly explained mechanic. =)

Or if you reached the same numbers as me and got a different result, please also post so we can put down this theory.

Thank you!