Are these used or new prices?
$400 is definitely high for a 2002 model even brand new. They have been refined quite a bit since, but still a very good bow.
The 2003 Pro40 Dually for $350 in good shape is a decent price, and it's a terrific shooter and a real burner.
If you want a bow that will do both 3D and hunting its a very good choice.

The Patriot will have a longer valley higher let-off and the draw cycle is a bit easier, the Pro40 Dually will be faster with a shorter valley.
I have hunted with both , and I would lean toward the Patriot just because I like singles for hunting (higher let off and better valley)
I wouldn't personally pay more than about $300 for an unused 2002 Patriot, $250ish for a used one.