I am making this thread because a lot of people on the base think sasuke is slow, but he is the opposite of that he is really fast. I think Base Sasuke is roughly as fast as SM Naruto. This because of the following two scans in which Naruto and Sasuke fight the Third and Fourth Raikage respectively.
Naruto vs Third Raikage
Sasuke vs Fourth Raikage
Both Raikage's have the standard lightning armor activated and both Naruto and Sasuke where able to anticipate with their reflexes and their bodies where able to counter attack with high speed. Both base Sasuke and SM Naruto are as fast as lightning armor V1.
The Fourth Raikage has a lightning armor V2 and that is comparable to Naruto's KM and BM.
So, while Sasuke is a bit slower than Naruto he is really fast and he can keep up with him.
PS: So I had this theory that Sasuke will copy the Raikages lightning armor, but only V1. It would make sense because Sasuke has an affinity for Lightning and his reflexes are top-notch.