I wear a 9.5 in Mizuno's, so what size do I need in Asics?

My Mizuno volleyball shoes are a 9 1/2 and I'm considering buying some Asics just to try them out. I've never had Asics before so I don't know how the sizes run. What I'm trying to figure out is if a 9 1/2 in Mizuno is the same as 9 1/2 in Asics? Or do I need smaller or larger than that in Asics? Thanks for the advice!