Guitar Hero III is, arguably, the weakest main installment in the series - though not bad, if you enjoy Guitar Hero and it's like, it doesn't have quite the punch of I & 2, and World Tour is a significant improvement. Burnout 3, meanwhile, was arguably the best installment in its series until that point (though I'd say that Revenge is slightly better and Paradise is significantly improved), its most important facet is bringing the Burnout franchise to the main forefront of racing games in the US, and thus bringing us future great installements. In this battle of threequels, I choose Burnout 3.