Codemasters has claimed that Sony's Gran Turismo 5 can't match up to the "adrenaline rush" provided by its own F1 2010.
GT5, which was released worldwide this morning, features a handful of customisable F1 cars - and the chance to race them online.
However, although Codemasters acknowledges Sony's game as a "phenomenal product", CEO Rod Cousens told CVG that it might run the risk of overplaying realism at the cost of excitement.
"GT5 is going to be a phenomenal product, with the time and investment Sony have made in it," he said. "You can have a technically phenomenal game, but you can also have a game concept that doesn't really appeal [to some racing fans] and could be accused of - and you have to be careful how you write this - of being boring.
"We don't have that problem. We feel the adrenaline rush that we'll always provide in F1 will not be matched by anyone else. You're going to have all the cars, all the tracks and all the worldwide locations - not to mention the best strategy, and the best damage, as far as we can. If you're an F1 fan, you don't need to go anywhere else for that."
The news comes after EA VP Patrick Soderland claimed that GT5 was "sterile" and said the incoming Need For Speed: Shift 2 Unleashed was a more "authentic" product.
F1 2010 topped the UK Chart earlier this year, winning widespread praise from critics. However, Codemasters bowed to calls from fans for a major patch soon after release.