Go here to see a chart that compares the major religious groupings in the U.S. with the national average regarding the percentage of each religions participation in one of 5 income quintiles.
Also go there to see the chart big enough to actually read, along with the notations.
In first place, with the highest positional average, are the Hindus, with the Jews holding down a strong second place. Apu must be doing better than I thought.
At the bottom are members of historically black christian churches, just below the Jehovah's Witnesses.
There is not enough information here to draw any really deep conclusions, except that belonging to one religion or another doesn't guarantee anything, but your odds do seem somewhat better in the temple than in the church.