In that case shaman only have a stun if you're using the Primal Elementalist earth elemental. Oh woe is them. Now they're forced to rely on merely:
- A multitude of snares,
- Potential roots,
- Ranged CC,
- A survival cooldown or two (depending on talents),
- Reliable, frequent self healing, (Whether healing surge or HST)
- An on demand speed boost whenever required, for however long it is required.
- High burst potential
- Truly monstrous new cooldown (Ascendance)
And that's before we get into the spec specific stuff like elemental being able to cast on the move and possessing Thunderstorm, or enhancement being a melee that partially ignores armour.
Before we all go Chicken Little about how the new toy isn't what we wanted and we may as well fling it out of the pram it might be a good idea to consider the totality of the class and it's wide range of abilities in PvP? Perhaps in that context a stun that doesn't always work exactly as you want it to is not the end of the world?