I'm not surprised at the suggestion that American movers are a lot better than movers elsewhere. To me (living in the US) it seems ridiculous thst the company wouldn't want to 'exhaust' the movers - are they not used to carrying furniture?
My DS and his friends moved me out of a four bed house into a second floor apartment over a decade ago - they were seniors in high school, and it took two days and lots of back and forth with a van. We had bed frames, mattresses, box springs, a heavy sleeper couch, hundreds of books, bookshelves, armchairs, china, glassware, kitchen appliances, boxes and boxes of clothes and shoes, two area rugs, pots and pans, half a dozen chests of drawers, coffee table, art, Christmas decorations, a large Victorian sideboard, microwave, TVs, dining table and chairs, kitchen table and chairs, plants, toys, console, lamps, window AC units, fans, everything from my pantry and fridge, bedding, and much more.