No curse mark? I still have to hand this sasuke due to his chidori variants which have already shown to be a counter to Yamato's wood release. And sai get's taken care of pretty easily. But even though I feel Sasuke wins this mid diff Yamato should not be underestimated just because of their encounter back in the early part of part 2.
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After yamato escapes sasuke's katana he clearly saids he was going easy because of naruto sakura being his comrade before and he makes a remark about getting serious this time. And the fact that yamato knew he was a uchiha but still was confident in going toe to toe with sasuke in terms of CQC but sadly fell victim to a unexpected raiton covered katana which im sure he would had countered if he knew before hand.
But sasuke still takes this based off of feats.