Evaluating Space and Time

This one is a tough pill to swallow for Big Vlad, because he didn’t make any big mistakes. When we count the material after move 36, then black is a pawn up. If we switch on the engine though, then black is a pawn down. This means that the white king on c5 is basically worth two pawns and it got there more or less by force. At that moment it wasn’t just a case of evaluating space and time anymore, white simply has an extra piece on the queenside. So what does this come down to? It looks like black lost too much time along the way.