i completely agree with the first fact but the second one not so much, tobi is using a s/t ninjutsu, can also be called teleportation and transportation..they can all really mean the same thing in this particular situation because he is using teleportation to transport himself to a different place...sooo it still follows his pointI dont think it is shisui. First reason he lost his two eyes(He gave 1 to itachi and other to danzo), so he cant control 4th mizukage without those eyes. 2nd reason tobi is using transportation jutsu not teleportation (naruto shippuden 139 when shino attacks Tobi).