User blog comment:PhoenixRising101/Gura Gura No Mi/@comment-4754162-20120310115614

Regarding the tsunami, personally (just my opinion) I think Akainu CAN do something about it, either he does the haki wall defense (remember during Marineford war where all 3 admirals stop WB's shockwave from reaching the platform) or he makes a wall of magma burst to stop it.

And he will know when and where the tsunami is coming from (Kenbunshoku Haki), something similar to Luffy protecting Weakhoshi from the axes.

Though true the Gura Gura no Mi has the potential to destroy the world but in a sense, only if its used to the extreme and based on careful planning on where he executed it in order to destroy the world. The same can be said to the Yami Yami no Mi as well, you know black hole, he can do one big enough to cover the world, absorb everything in and then its his turf from there onwards. Again another potential world ending power. In the end, no one fruit is super overpowered, having the potential - yes, but really overpowered - nope, don't think so.

Just my 2-cents