in comparison revo and t-maxx are not 1/8 scale rc's more like oversized 10th's so there lighter than most monster trucks. the tamiya TNX 5.2r ir really a t-maxx with a few changes but it's only 9 pounds with a .32 in it so imagine how it flies by 13 pound savages and lst's. revo's are not winner's because of the driver's alone ! they have almost a 3 and a half pound advantage ! the motor isn't as powerful as the other trucks but there very close after the math is done ! Wt. vs POWER !