Ill check thats accurate...

Series 1 - Roadblock beat Bodyhammer on JD
Series 2 - Panic Attack pitted Cassius
Series 3 - Chaos 2 KOd Hypno-Disc
Series 4 - Chaos 2 beat Pussycat on JD
Series 5 - Razer beat Bigger Brother on JD
Series 6 - Tornado beat Razer on JD

...Actually, I want this year to be another judges decision. Makes it more exciting.