The Brunswick Centennials and the Super Aramith Pro are the exact same ball except for the graphics. It says so on the Salus website:
As the top of the line, the Super Aramith PRO set distinguishes itself by its beautiful design and numbers and the maximized in-depth vitrification of its More importantly, it is a fully matched professional set, where precise calibration of each ball guarantees maximum consistency within the set. The Super Aramith PRO also exists in the Centennial design produced for Brunswick.
Here's the link:
Near the bottom of the page under A Whole Range With The Tightest Specifications
Not only that, but in a response to this exact question here's a quote from an email I received from Aramith Customer Service:
Dear Sir,
It is true : the Brunswick Centennials and the Super Aramith Pro sets are made with the same phenolic resin and have the same specifications.
Regards.
ARAMITH - BELGIUM
So go with which ever one you like the looks of better, keeping in mind that the Cents are typically more expensive.
The Aramith Tournament set is their newest premium set. It is the most expensive Aramith branded set so you might take that to mean it is the "new" top of the line Aramith ball, though as noted in the quote above Saluc still refers to the Super Pro "As the top of the line." The Duramith technology in the Tournaments is claimed to last longer and due to lower friction results in less wear on the cloth. I seem to recall Fatboy saying they are better and that the cue ball doesn't draw as easy. This would make sense if it produces less friction, so perhaps the claims are true.
I have both the T's and the Cents but haven't really used the T's enough to make an assessment. I just like the look of the Cents.
Whether Brunswick will go with the Duramith technology in the Centennial line remains to be seen but right now it is the equivalent to the Super Aramith Pro.
Hope this helps.