Real soldiers have respect for their adversary and since they practice war in war games, they know that no adversary can be discounted. In particular intelligence and willpower count for far more than weaponry. The film Avatar is another good example of how arrogance about the adversary led to defeat.
The enemy that you need to fear is the one who is not afraid to suffer pain and loss. Like the Soviet Union in WWI for instance. Or Syria's Army nowadays.
Haha, read this https://en.m.wikipedia.org/wiki/Millennium_Challenge_2002
Ochmanek has run the two-day table-top exercise eight times now, including at the Pentagon and at Ramstein Air Base, in Germany, with active-duty military officers. “We played it 16 different times with eight different teams,” Ochmanek says, “always with the same conclusion.”
Can you guess what the conclusion was?
Ground forces will lack artillery pieces and shells and will find its logistics stretched, and tank mods of recent 20 years were going the wrong way for a shooting war, and new combat vehicles like Stryker and not what a real war requires, so it will have some trouble, but ground forces need to act only in the very end - where enemy is softened enough by airstrikes - and that will work whole lot better than in Desert Storm these days. Much more kills per sortie due to all these smart munitions - and there are sufficient numbers of them to break down any armed forces in the world.
So in essence, air force will make sure that every adversary will be pretty soon down to 'asymmetric warfare' level if not completely defeated. Think Russian WWII partisans. And that is what US Army has an excellent experience dealing with.