In a situation like this

If it was Ionia vs Noxus in a soccer match, would red card katarina favor noxian players and unfairly deal with ionian players by issuing them unjust penalty cards/red cards? Can we assume favoritism will occur in this match? She's gonna treat ionian players like shitt right?

I mean will she give the Ionian players a hard time? What kinda things will Kat pull off against the Ionian team and will Ionian players walk into the game knowing that a referee is a Noxian and that she could give them a potentially hard time?