Are "excellent" move really stronger than "best" move?

Hello guys! I was playing with a friend and by looking at the analysis I noticed something weird. Here's the image:
The "excellent" move bring the black to -10, while the "best" move to -57. That means that the "best" move is roughly 6 times stronger than the "excellent" one, but I have thought that an "excellent" move is stronger than a "best" one...can someone please clarify this concept to me? What am I missing?
Thanks!

the order go

Excellent moves are good moves that are preferred by the engine at the 2nd priority. They are almost equal to the best moves but not better than the best moves as the best moves are the moves preferred by the engine at the first priority.

I have yet to get a "Brilliant" and I still don't know how to get them. I've noticed when I get Great Moves", it's because what I did was the first move from the "show moves" either from putting myself in a good position or the bot made a blunder. But how do I do a brilliant move, like I would imagen that the popular 4-move checkmate thing would be a brilliant, but It's not, it isn't even a "Great Move".