Yeah the lack of tack space in the euro trailers is the biggest pain point for me! No way I can easily fit 5 days of hay, grain, two trunks and gear for two horses the way I can with my basic Exiss. And (as you said) the American double ramp trailers have two almost identical heavy duty ramps vs the smaller front ramp on that Euro style.
I like American style trailers for the storage space, durability, and creature comforts that you really don’t get with the Euros until you go to a horse van. A lot of that does come with weight, but we have the trucks to haul them IF people choose to do so. I priced out a new F150 and a new F350 - for similar trucks as far as the details besides actual towing, the F350 was only $4k more.
That said, I’m considering a EquiTrek whenever I do get a new trailer. Cheaper than a new truck AND trailer, and can be towed by more vehicles in a pinch. There’s good and bad with both styles.