john what you are forgetting is that inorder for it it to recieve a ip 67 rating is that it should also pass all the other ip tests before it,including the ip 57;test which is "powerful water jests at all directions on the device, at 100 liters a minute at 100 kpa for 3 minutes". which is effectively 8 pressure washers on it for 3 minutes.
the go is completely sealed , the rubber linning cannot be desturbed like other water resistant phones. then there is the additional back cover which reduces pressure on the rubber seals.
the weak points are the ports imo.
heck the go is said to be more resistant than the active and sony showed people surfing with the active, in their promo.
that is well over 1m of pressure on the phone when you combine the act of fallling in the water with the waves.
