Why Does Beyer Get Dissed?

I dont really use BSF to handicap at all. I find them useless in my method when I do handicap. My main tool is race replays. I use replays of races to see what the heck happened in the race. Did the horse get squeezed, did he get caught in a speed duel, did he make a move and flatten out etc etc. I then take the race replay and couple that with the times the horse has been running, the competition, does the horse fit etc etc. On Saturday there were two total underlays. 1) Planets Aligned in the 1st at Saratoga. The horse went off at 13-1 and the sheets and beyers indicated that he couldnt win. But the horse is in great form and he fit with the group he was racing with. Of course I had him to win. 2) Fast Act in the 4th at Monmouth. He had a horrible trip in his 1st start. He went off at 29-1 and no way should he gone off at that price. He was a 2nd time starter on turf out of Theatrical. He loved the distance and he was going to run into a speed duel. Things like this the sheets and beyers dont capture. IMO so many things come together to help you make your selection.