I know for Meowstic it is different so I am wondering if it is the same for Pyroar.
There is no stat difference between male and female Pyroar. It is just the look.
Not much more to say.
Source: Experience. There are a lot of Pokemon that look different between genders, but they are not form changes, so no stat changes.
Because Meowstic is the only Pokemon that have differences in stats and moves. Pyroar just has a big gender different look.