Dragon Pulse also lets you hit Dragons for super effective damage, WHILE letting you use another Hidden Power. This is probably the most important reason for using Dragon Pulse, IMO, so you can run stuff like HP Grass to hit bulky Waters a bit harder (Rotom-W, Gastrodon, Vaporeon, etc).
Whatevs sig. QC member for OU and Ubers, VM me for a look at your analysis. Just make sure it's good.
Also, if you want me to rate your team (OU/DW OU/Ubers), give me a VM. If I don't rate it, it's either 1) it's so shit it's too much trouble, 2) I'm busy, or 3) the team is fantastic and I have nothing I can suggest to you. You should be able to recognise which one.