drivers win/finish races. guys that are hacks are going to break no matter what. the local track where I generally race is 90% revos. half the field is broke and doesnt finish the main. Generally there is one savage, 1-2 LST's at most and maybe one MGT if I decide to take mine. At that specific track, the mains are generally only 15mins long and Ive finished every one in MT and never finished below 3rd in the 2 summers Ive raced there. The time I finished 3rd was in the MGT and I broke a front center CVD on the first jump of the first lap and had to drive rear wheel drive the rest of the time, finished 1 lap off the pace.
Now, I dont consider myself a great driver by ANY means. Just most of the guys there don't drive with their heads and are too wrapped up in the "speed" issue of racing.
the only RC vehicle I ever had for offroad that was prone to breaking alot was a Matt Francis XXXT. those A-arms snapped like crazy on that thing. I put plastic arms on it and it was good to go.