I don't know how anyone would think Ninetales is S rank. Sure, it offers sunshine, but Ninetales itself sucks at performing any other job other than maybe bulky fodder set, so you can try to win the weather war. Honestly, Ninetales is sand weak, rain weak, stealth rock weak, and although if it wins the war it isn't rain / sand weak, its weak to the opposing inducers, which is the problem. I guess Duggy remedies this issue, but then we could put a whole bunch of Pokemon in S tier (like Dragonite) if we include partners too. Ninetales itself sucks, it's fine where it is. Sun is great, but I find it's pretty predictable and managable and I would rank the entire playstyle A-B at best, no where near S.