Well, I do have both of these, though, both are not drilled the same, the dimension is semi-polished and the cell pearl has a lil' more polish to it.
The dimension isn't as long and a very smooth reaction, not jumpy off the spot, and drives through the pins very well.
The cell pearl is a little more longer than the dimension and pretty snappy off the spot ( still controllable ) I wouldn't call the ball an over-under kind of ball, but sometimes it can really hit and drive then others is still hits but not a whole lot of drive.
Overall, both carry well, I can play only a 3-4 board difference deeper with the cell pearl, but I find that I am able to be a little more versatile in lines with the dimension.
Hope this helped some!