Hi mark and happy holidays to you and your and i hope you have a wonderful 2011 ! Omaha is like the most second popular game next to no limit holden amoung poker player that play live or online and to try and answer your question a flush is harder to get because usually it goes deeper before players knows that he has one most of the time. Now is faster to get in omaha than no limit because there are more card seen first
and available. Hope that answers your question and good luck !