No.
FYI: One ton crew cab is the tow king in light duty trucks.
I have a 24' enclosed like yours and my 91 V2500 burb tows it 'ok' but really sucks. It lacks power (stock tbi 350) and it doesnt handle the weight well.
My 05 k3500 crew silverado doesnt even know the 24 footer is there.
A guy with a 3/4ton anything would do just fine moving that trailer across country. That size is exactly what a 3/4ton is designed for. Your newer '05 is a totally different vehicle, including the fact it's a larger capacity vehicle in the first place.
A guy would do just fine with any 3/4ton and that trailer, regardless if it's an older burb or a newer Ford Excursion with a 7.3 or 6.0L PSD. Thats simply just a difference in technology and over all condition of the vehicle, but the weight capacity is there regardless.
I agree, I'd rather pull hills at 50+ miles an hour in one of my Dodge diesels than my old K30 struggling to do half that, but in it's day, that 205HP 454 was the pulling "monster" then.