The Tundra will handle it no problem. We tow our 21 Lavey with my 2wd Tundra with no problem. In fact, it tows and stops better than my wife's 1/2 ton 01 Suburban. It pulls the grade on I-40 leaving Laughlin at 55 in second at the peak of the grade with no sweat and never overheats.
As far as braking goes remember that 3/4 ton trucks must have bigger brakes since they are much heavier and need a larger surface area to help them stop. If your trailer brakes are in good shape you won't have any problems with the Blazer or the Tundra.