Win 7 on a normal disk: Photoshop cold launches in under 7 seconds, warm launch in about 4 seconds.
That will slow down if you add a lot of third party plugins or presets, and can slow down if there are a lot of fonts or color profiles installed (depending on the state of the OS caches).
did you use process hacker?
did you use the total cpu time or user cpu time?
User time (stopwatch), and no I don't use process hacker (it wouldn't help).
Photoshop CS6 does spawn more threads at launch, so if you mistakenly looked at CPU time, it would appear slower.