Oh boy...

So, I got the Botbitz ESC, the Sabertooth ESC and the drills in. Just waiting on the HDPE to come in. But (here it comes), I've looked at the little sheet that comes with the sabertooth, and although it says on the technobots website that it's good for 30lb combat robots, on the little sheet, it says at least half of that. This is the thing I'm talking about. Did I make a big mistake buying this? Or is it suitable for what I want to do, which is power two motors for the movement of the robot?