I'm not sure you can say something is normal based on only 3 data points. However, you can say something is normal based on the fact that it doesn't affect ghost and does less damage to rock and steel.These are all different variants of couples in the Pokémon world, but the prevailing theme? It seems the norm for couples in the Pokémon world is that women have the upper hand in the dynamic compared to men. You have a couple where the girl is the stronger trainer, so much so that she claims she cannot rely on her boyfriend (and her boyfriend has to rely on her), you have an old couple whose relationship is that the wife is absolutely the better Trainer and always prevails against her husband in battle, and a young couple where the girlfriend is actively toying with her boyfriend's feelings.
Malewife and girlboss couples are pretty much the actual norm in the world of Pokémon, in many ways, and I like that a lot. It's pretty funny and likable to me.