they could be, but at the end of the day there need to be proper study about the statistics, the thing is, trading platform never really reveal genders, so we have no way knowing.

I personally have seen good amount of female traders that makes big profit but I also think that trading as a money making activity doesn't care about your gender. also, people are dynamic not 1 dimensional, regardless of gender, some are good at multitask some are good at one task.
at the end of the day, the result depends on you as an individual.