yes it does because it makes others feel weak then their character has to prove themselves then the whole roleplay gets ruined because no one is agreeing on anything and everything gets destroyed.
(i agree here and there someone has to lose i think they should come to an agreement before they make characters engage themselves everyone wants their character to have a highlight but usually means winning and someone else losing people should compromise so not to ruin the rp. If your superman and im a villian i will let your character win the fight but i will put up a good fight but next time or next rp i could win.
I also think that to make a good rp the hero doesn't win everything the bad guys have to have their moments to or else they don't seem that bad like aizen he was winning for so long you wondered if he could ever actually lose and seeing ichigo fail and fail but slowly grow made bleach great