Red mountain has a clearly visible 1 second cast time, only works with weapon skills and on stamina characters.
Sload's works with every damage, on any type of character and doesnt have any cast time meaning it'll be impossible to react to in melee range
If you want me to reply to your comment type @Ankael07 in it.
The set won’t work on nightblades, and is useless against Templars. I imagine sorcs will not be happy till it doesn’t work on them as well and won’t stop crying till it does.