Is Solidcom C1 Pro much better than Solidcom C1?

I used Solidcom C1 befored and I wonder how C1 Pro is different in performance compared to C1?

It's the same in general, but noise cancelation makes a big difference in noisy enviroment. I could hear camera operator standning next to stage soundsystem very clear, but he couldn't hear me because of the noise w from soundsystem (maybe 2-ear headphones would be better, but I don't have them).