I only have wireless PS2 controllers for some reason, so today I picked up a silver Sony 'Force 2' controller at Target for $15 on clearance. The controller & packaging look exactly like the Dualshock 2's but it just says 'Force 2' on the box and there's a Katana logo in the upper right corner near the hang tab.
I googled before posting and couldn't find much info on the Force 2. Is it basically the same controller as the Dualshock 2 or are there some differences?