@LearningToMove I had two brilliant moves in a row once in a game that I still lost. It was a losing endgame and my oponent made a blunder, which give me an oportunity to draw. When there has only one move that holds the position, I think it's probably the most commom cenarios to brillant moves.
Accuracy in the other hand is calculated by the amount of moves that you make that are the choice of the engine too. In many begginners games what happens is that someone blunders pretty quickly in the opening and the whole game goes for simplification followed up by a winning endgame and both players make good moves for the most part of it (except the blunder).
And because one side has clear advantage is very easy to spot the best moves. In higher rated games what usually happens is, because neither players blunders to the openings, they have really really complex middle games and chaotic positions with a lot of tatics, which in blitz could be missplayied even by GM's.