Equals just about. In almost every test, they nearly tie. Get whichever is cheaper. Both of them scale better with higher speed fans due to their fin arrangement. If silence is your game, don't get either. With low speed fans, there is no difference between them and the hyper 212+. I own a V6 regular, if you have any questions about it.
I have used the Frio and its seriously loud but does have fan controllers so you can turn it down if you don't need it on full. The annoying thing is its a few mm taller than other 120mm coolers and therefore didn't fit in my case when a 212+ and Thermax Eclipse 2 did.