how is this brilliant

https://www.chess.com/forum/view/game-analysis/how-is-this-brilliant-3

At https://www.chess.com/forum/view/game-analysis/brilliant-moves-in-new-game-analysis-report?page=26 , someone posted this:
"'Brilliant (!!) moves and Great Moves are always the best or nearly best move in the position, but are also special in some way.

We replaced the old Brilliant algorithm with a simpler definition: a Brilliant move is when you find a good piece sacrifice.

There are some other conditions, like you should not be in a bad position after a Brilliant move and you should not be completely winning even if you had not found the move. Also, we are more generous in defining a piece sacrifice for newer players, compared with those who are higher rated.

Great Move is a new move classification that is denoted by a single exclam (!). These are moves that were critical to the outcome of the game, such as going from losing to equal, equal to winning, or finding the only good move in a position. Similar to Brilliant moves, we are more generous on what we call a Great Move for new players compared with high-rated players.'

Source: https://support.chess.com/article/2965-how-are-moves-classified-what-is-a-blunder-or-brilliant-and-etc " (March 6, 2023)

Perhaps this is of interest: "... there are differences between the apps and website. Apps are lower depth and may also be hitting different back-end code, depending on which app and what version of that app" - Martin_Stahl
https://www.chess.com/forum/view/game-analysis/brilliant-move-inconsistencies

In the https://www.chess.com/game/live/141517638288?username=yogesh11723 game, after 1 e4 d5 2 exd5 Qxd5 3 Nc3 Qd8 4 d3 Nf6 5 Bf4 Bf5 6 Nb5 Nd5 7 Qh5 g6 8 Qf3 c6 9 Nd4 Bg7 10 Nxf5 gxf5 11 c3, the machine thought that 1e4c6_O-1 already had an ~1 point advantage. 11...Nxc3 allowed you to take 1e4c6_O-1's knight with a pawn, and was nevertheless good enough to retain the advantage for 1e4c6_O-1. (12 bxc3 Bxc3+) To the machine, that qualifies as brilliant.

The machine does not really understand English.