I agree the Triumph is the stronger of the two.
I just purchased The Deal(my first Hammer ball)a few weeks ago, and I am very happy with it.
I have used it on medium to oily, medium, and light conditions and the results were the same. Great length, smooth/controllable back-end, and extremly hard-hitting! I have averaged over 230 since buying it.
Being a power stroker, I was still able to go up the boards, and go coast-to-coast with it. The ball simply allowed me to do what I wanted it to, with hand/wrist adjustments, and speed control. I find that I do not have to switch balls as much, hence its versatility. I also left the ball as is, out of the box finish.
In spite of the numerous negative reviews that I have read, I have yet to encounter any problems with it. The carry is phenomenal, especially on half-pocket hits.
Interestingly enough, a couple of Friday's ago, someone from Minnesota shot a 900 series using The Deal....