Ace describes the difference pretty well:
As someone said, both groups don’t like crony capitalism, but OWS wants to keep the cronyism and ditch the capitalism. The Tea Party, the opposite.
That sums it up well. I, too, don’t like the Wall Street shenanigans, but it only matters when I can’t say NO to it. I can fire a Wall Street business, except when they are spending government money taken from me, given to them, in return for campaign support.
I really only worry about things I can’t say no too – government being the only large example.