Why, you say? For one, the four buttons in the centre of the controller are placed in an obnoxious format. Instead of having the Select and Start buttons across the middle, with the Analog/Steering button and the Turbo button where the Analog button is on the normal
DualShock 2, they have the latter two across and the former two down. This means that every time you want to pause the game, you've got to reach between the two analog Sticks, and any game that uses Select or Start as an actual game function becomes much more irritating to use.
That's a minor problem, though. The main problem with the Omega 2 is its D-pad. When you press it, it reads the correct direction . . . seventy percent of the time. The other thirty percent, it doesn't think that anything's been pressed. This isn't so bad in games where precision is not needed, but in this day and age where the Analog stick is the standard and the D-pad is only used in precision movement, this is a fatal flaw. Navigating menus with the D-pad is an exercise in frustration, as the selector never goes down or up like you want it to.
The rest of the buttons and controls on the Omega 2 work fine. The analog Sticks are nice and precise, reminiscent of the tight DualShock 2 ones rather than the loosey-goosey DS1 sticks. And I had no problems with any of the face buttons or shoulder buttons detecting my pressing of them. But the D-Pad drove me up the wall.