About Brilliant Moves

Everyone knows brilliant moves if they have done game analysis, right? For those who have never done game analysis OR know what a brilliant move is, well, the explanation is simple, as shown in game report when you hover your mouse above the brilliant move icon. it says: (out of memory guys correct me if I'm wrong) The best move! and hard to find too! Well, a lot of times, its not that hard! look at the picture(it's from chess.com) and it says bg6 is BRILLIANT! do you think that move was hard to find? there are much better moves in my games and GM games that are labeled as MISTAKES and BLUNDERS and INACCURACIES! OR EVEN JUST A PLAIN OLD BEST MOVE! bg6, it is forced and a 1000 rated player could find it! so are brilliant moves all that great?