http://stmartinsepiscopal.org/wp-content/uploads/2015/01/2014-Annual-Report-compressed.pdf
The map looks like a shopping mall
Pikers by Texas standards.
Looks like First Baptist Houston is about $30 million a year ($60 million over two years per http://houstonsfirst.org/start-here/mission-18/ )
Per Wikipedia, Second Baptist Houston comes in at $55 million.
And it's not hard to find other churches that beat the $12 million.