Overloading a 'yota not possible?
How about towing a 7500 pound trailer with a tacoma rater for 3500 pounds... granted it took awhile to get to speed... (a LONG while, heh).
Plus, 86-95 yoter's> you could overload those any day ( i did it to my 4runner) and it's fine, toyota designed these trucks to be 1 tonne's, the only difference from real 1 T's is the softer springs and non-floating rear axle... None of the american iron has done that.

Oh, and i agree for pure brute strength/power you have to go american (ex. my cuz just dropped his Taco' for a PSD f350 dually) but for what it is (in contention), a taco vs a ranger, tundra vs f150, i'd go 'yota any day.