The combat part was ok I guess, but what OP is pointing out was what we went to conflict with. Lots of money was spent upgrading Humvees with armor and turret mounts that didn't exist. The equipment fielded by US troops actually looked very different from a comparison of 2001 and 2005. Body armor went through development iterations, camouflage patterns, infantry equipment like magazine carriers and weapons optics, and so on.
Had the US tried to drive into the Afghan and Iraqi desert the way we did against fighters armed with heavier weapons and fighting skills then the US losses would have been a lot higher.
The Iraqi military had more formidable equipment but was so ill-trained and the moral so low that it was very much a paper tiger.
I think people underestimate hiw much the US military has transformed over the two two-decade long conflicts. There have been striking changes both organizationally, culturally, and technologically.