The price cut rumor most definitely can't be hurting sales significantly.
Check out this post I wrote a few days ago.
Curious observation you did there though... Put that together with PSP/PS2 sales dropping and you have a recipe for disaster at SCE. They better get their stuff in place if they want to have a chance at making an eventual PS4 succeed.
My Mario Kart Wii friend code: 2707-1866-0957