I'm not really sure how the tie-break proceeds after a CB tie, but if I'm not wrong I think I ended up beating Pauchis based on my rankings, is that correct?
I'm not sure who wins, but it's not ranking as I can see in your first round diffs that there was at least one difference and so somebody will win in first round shoot out.
Yes, comparing the scores from Round 1, Pauchis wins on SR1
04:04 | Pauchis (ARG)
vs. BrunoBeidacki (BRA) #SRs: 2-2, Shootout: SR1
Pauchis took Whittington in 2 sets while BrunoBeidacki took Whittington in 3 sets. Whittington won 64 63.