Anecdotally, most American men are slobs. I admit that I am... not one of them.
I go to the gym 4 days a week and I'm in excellent shape (6', 183 lbs., 32" waist, 8% bodyfat), I don't drink soda or alcohol at all and I watch what I eat, I like to wear suits with nice shoes and I follow a personal grooming and style regimen (vis a vis, I show up appropriately dressed to formal or business occasions), and while I play a ton of video games, I have other diverse interests including cars, fashion, music, art, etc.
I went to buy a suit today at Nordstrom and the other guys there were either with their wives or mothers and none looked happy about it. I tried on a ton of suits and found most are made for fatter men and I ended up buying a pricey European suit because that was the only one that fit properly (I didn't want to but Euros aren't as fat as Americans and their clothes are made slimmer; thank goodness I didn't have to buy a bespoke suit because that would have cost even more).
I've observed (again, anecdotally) that most American men are out of shape, not well groomed, drink too much soda and beer, consume too many processed foods, are not sophisticated or urbane, are not well traveled, and are not cultured and don't have diverse interests (being into the NFL or video games are the pinnacle of their cultured tastes).
There's a point to all this. To a degree, slovenly American men is a good thing because now American women can judge us as harshly as we judge them. The ladies have earned the right to laugh at the beer guts, stained shirts, socks and flip flop slobs that most (but not all) of us have become.