I have to disagree.
You are not winning without talented players AND you are not winning without good coaching. It's not one or the other, both are necessary.
I don't understand why professional coaches are so disrespected. We all understand an accountant, a plumber, an engineer or a web designer are professionals with a certain level of knowledge and ability. Sure there are the good ones and the mediocre ones, but how stupid would be to think that any of us can do their jobs better than them just because we have watched them do a 10% of their job on TV?