if thats so then why did sasuke let shin get away?
Idk how would the average person feel when they find out that the person they are about to give a beatdown to was somehow related to them when they thought that they were the only one to survive a massacre of the family, Shocked. and you said why he let them get away, assuming that Sasuke intentionally let him get away, but you mean unintentionally and it was due to the shock value of him seeing a sharnningan user besides himself, this elapse of time allowed him to get away.
I mean seriously, Sasuke could've done an infinite amount of things to Shin and you can't deny this even with EMS, shin was standing long enough for Sasuke to neg and shin even said that Sasuke was VERY STRONG this man didn't even use 3 tomoe and he's already noted as very strong. What does that tell you? obviously the shock value was immense.