Not sure of the wording you've used here, but I will give one hypothetical situation. Many times players with an equal score can have the tie broken by number of wins because the organizers want to encourage players to play for a win more often than settling for a draw. So, in this case, if player A draws 5 games and finishes with 2.5 pts and player B wins 2, loses 2 and draws one and finishes with 2.5 pts then player A would win the tie break.
I'm not sure if that's what you are talking about or not, but that's my guess about what you mean.
When 2 players have the same score like 1/2 for example why is the player with more losses considered better in tiebreaks it seems to me the one with no loses (=2) was more consistent. 1/2 may seem silly and the latter deserves the win but then it should be the same for a larger scale tournament.