There's mad deception within the upper ranks. Pein, his partner, and the mystery figurehead all know Sasuke is alive. Kisume was easily duped. Itachi looks the same as always even though I think he's aware Sasuke is alive...or I think at least cynical of what Zetsu and Pein are telling him. I cant tell if Pein is giving Deidara his due respects or if he is overplaying Deidara's death like a coverup. I do find it pecular that Pein is hella downplaying Tobi's death though.

So uh.. one of Tobi's strengths is the ability to run fast? There should definitely be more to this and more to Tobi himself. The only significant things he's done were filling in Sasori's spot as Deidara's partner and giving the killing blow to a bijuu (and we dont even know how he did it). His introduction into this manga has certainly not been justified thus far.