How can I tell if my Fantasy NBA head to head league is roto or points based?

The scoring says head to head and from the stat categories it looks like you're in a league that counts up weekly "wins" per category. Usually that means is you win 5 or more categories that week, you win (i.e. 5 categories to 4). Points-based leagues usually don't utilize percentages for points, only "total" categories, i.e. points, rebounds, ists, etc.