Since I was there for the American Revolution:
1. American forces fought traditional battles after they received organizational training and some semblance of trained officers, courtesy of European advisers.
2. The general observation that American's fought a guerrilla war is the result of early and then continual experience with non-yeoman militia and countryside revolutionaries that neither had the power, training or understanding that they were fighting 'insurgency style'.
3. We cannot appreciate in the modern age how important basic training is; we assume, and since we've all played America's Army and have watched action movies that an Army must suck to lose.
The reality is that in this time and age there were very few in the English colonies of America who had organized military experience. The concept of "covering fire" and "bounding over watch" simply did not exist in the mass consciousness of the people. By comparison, a youth with literally no experience in military organization, tactics or quite probably no expectation or insight into what war on the British level meant.
Compared to your average 17 year old in any country today has a much higher grasp of these things by age 10. The reason why the Americans won the revolution is as much about their will to win against a foe that was not committed to the total suppression and defeat of the revolution, as it was to any General or battle of the war.
For every military victory of the revolution there are 15-20 other factors involved and independent of said victory that made the revolution possible for the Americans.
It's much easier to kill an organized Army and blow up and bayonet a soldier when he's in the "uniform of the enemy". Such organized schadenfreude was simply not possible in a colony made up of like peoples, farmers, relatives distant and near.
America had supremely effective politicians and public leaders. Their General officer corps were so-so with few exceptions. Their greatest, most experienced assets were lawyers, merchants and sailing captains or by and large borrowed or volunteers from other foreign powers.
So quit this back and forth. If you weren't there, don't make value judgments. Washington was a brave, competent General who doubted himself by the moment and ultimately ground his own teeth out of his mouth in worry. He carried that weight of responsibility from the start until the end of the war and through his term in office.
He was clearly up to the job of beating Howe and Cornwallis because he ultimately did. That does not make him better, or them worse because in the end they are not heroes or villains in the Revolutionary War, only actors with a part.