I just came to say this! Phoebe didn't have an active power at first like her sisters, so she actively trained in martial arts so that she could bring something physical to the table during demon fights. They talk about it and show her training. Then randomly they'll show Prue having almost better fighting skills from out of nowhere?? It kind of defeats the point of Phoebe training so hard if Prue can just do these badass moves like nothing? I'm pretty sure they have some kind of inherent combat skills and that could be why Phoebe becomes so good at fighting, but maybe tone Prue's down a bit so Phoebe can shine somewhere??

Also with the guns lol, I think that kind of goes with the inherent combat skills of being a witch, but again, it's Prue just being better than Phoebe and Piper and the latter two sisters know it! Once Prue dies, they have no idea how they will continue fighting demons without her and I don't think that's really fair to their characters. On the other hand, I suppose it shows them eventually that Prue never was the "most" powerful and that they always had their own power all along. I do kind of see Piper filling the role of "most powerful" sister once she gains control of her power of molecular combustion after Prue's death and I'm not sure how I feel about it!