3T Obito vs 3T Itachi

[ATD]

3T Itachi doesn't need Susano'o against 3T Obito. I don't see what Obito could do to Itachi. Itachi's too fast for him to even land a scratch on him.

obito is as fast as itachi, both kept up with kcm naruto, but the diffrence is that obito has much more chakra and all injurys are healed very fast.
A rasengan did noting against him, what will itachi do to hurt him ?