I'll be the first to reccomend a dually to one up the unsolicited "get a 3/4" responses.....lol!
For me, be hard to pass up 4 years newer and almost 40000 less miles for only $5k.
Both trucks will pull your little camper just fine and the ram may actually have a little more snort, depending on the gears. BTW it has an 8 speed trans. Stout ZF transmission.
I like Toyotas but could never get on the Toyota band wagon. Nice trucks, but I think these days reliability is a coin flip between all of the big 5 pickup trucks.