Man **** NO
Sasuke beat gara way back when he only had two tomoes
Let me clear something up real quick about sand blocking amaterasu, THE ONLY REASON SAND BLOCKED SASUKES AMATERASU FROM HITTING THE RAIKAGE IS BECAUSE HE KNEW WHAT SASUKE WAS GOING TO DO AND BLOCKED HIS LINE OF SIGHT RIGHT BEFORE SASUKE RELEASED. Automatic defence doesn't help against amaterasu because it's an instant thing, it's not something that you see coming it's whatever sasukes eyes are locked on to, you don't dodge amaterasu, A used body flicker as a gamble, he waited until the second before he thought sasuke was gonna use it and moved at super speed so sasuke wasn't looking at him when he released it.
Second, sasuke has pierced garas sand with chidori already and proven that his taijutsu is faster than the sand can react to and he's only gotten better. If that wasn't enough he's got susano which could peirce sand, tsukyomi; and gara doesn't have the one tail to help him out anymore.
Sasuke wins low diff
Oh and let's not forget izanami that's like a garaunteed win against just about anyone.