You can spin it whatever way you want. Fact remains the wishbone suspension is dominant over trailing arms. Cat proved it and the rest followed. Ice oval racing while fun to watch doesn't relate much to what matters to virtually 100% of what snowmobilers desire...a good handling sled out on the trails. It was a game changer from Cat.back in the day they did. (77- 90's) oval track was where trailing arms worked better. in the soo i-500 every cat a-arm sled broke down 93-94 Polaris won this race 16 years straight. mostly because they were still running at the end of 500 miles. cat has a terrible record at this race. yes sno-x and xc a-arms proved to be better. so company's did run trailing arms. the Indy made Polaris #1 in sales for thirteen straight years. cat was never #1 in sales with a-arms? so that really wasn't a game changer. ski-doo took over #1 from Polaris in 2003.