PvP is always a conflict on gambling if you asked normal gambler like that doesnt have skills on skill based game like you mention on the option B. Normally like me will choose the option A that is easy and purely luck based game because we have no chance of winning on PvP games that requires skills.
There might me some user here that will pick option B but Im confident that the majority here will choose A because its more easy to win on this type of game rather than competing against the pro on the game that they are good at.