Heh, heh . . To be the "Official Spark Plug of the NHRA" requires only money, not quality or even function. They sponsor a year's worth of contingency awards if you wear their decals on your car and have their plugs in your car when you win (or put them in after the fact).
Their rules dictate that you must use their product in order to qualify for the advertised contingency money. Or at least appear to.