In this exact same chapter, sasuke says the reason he was able to counter Deidara was because "my eyes give color to chakra" hence in the image you quoted, Sasuke is only able to see those bugs because they're completely full of chakra. So what is so special about the sharingan that it can distinguish one body full of chakra from another?
The Sharingan's main abilities excluding MS have been shown to be of a "following" nature, whereas the Byakugan is more of a "insightful/penetrating" nature.
(Going of the previously made statement that the Byakugan was superior to the Sharingan, long before Sharinganigans) If the Byakugan can't tell the difference, how could the Sharingan?
Um that's what I said? Though if the original body is being "divided" how exactly would you tell which one is original? On top of that, everytime we've seen the bunshin, a poof of smoke obscures the caster[/quote]Um, so if Naruto is standing in front of a sharingan user and he makes, say 5 clones, wouldn't the sharingan's ability to follow movements no matter how fast, give the user the ability to just track the original?
If you want examples, from Naruto Wiki, I'm not going to take this as concrete since there's no sources to the manga cited;
Fuck, Kakashi couldn't even tell the difference between Zabuza and his water clone, and Itachi showed no evidence of distinguishing Kakashi's clones in both of their fights.In the anime episode Brothers: Distance Among the Uchiha, Sasuke Uchiha claims that the Sharingan can distinguish clones from the original. This contradicts the manga and other anime episodes.
Now I think everyone will agree that this manga of full of inconsistencies and loopholes, the author just creates dues ex machinas whenever the fuck he wants, so you really shouldn't be looking into it too much.