ALOT of Rockets fans hated the Jazz back in the day. A lot of that hate has probably died away over the years but if CB is any indication the Rocket hate still burns like the fire of a thousand suns. Though, a lot of Houston sports talk radio still has not much good to say about the Jazz/SLC.
Also, the Spurs may have the edge in regular season (109-90) wins but Houston has the edge in the playoffs series (4-1).