Itachi will figure out how tobi s/t works quicker than kakashi and konan. Sasuke will arrow the sh*t outta Gedo mazo along with a combination of Amaterasu fire balls, while itachi attempts tsukuyomi on tobi to figure if he's an Uchiha or not. ends up not working because.. Well because he's tobi lol. tobi goes intangible, gets to itachi and grabs him, itachi summons crows and gets tobi off guard. sasuke ignites the crows with Amaterasu and catches tobi before he goes intangible. tobi survives/disposes the flames, ends up by sasuke but is forced to back away because sasuke uses His blaze technique to fend off tobi. itachi having an analysis of s/t, catches tobi when hes tangible with totsuka.
Hahah tobi is way more complex than this but I still go for the Uchiha brothers.