I think Regi's Zed only did well because of Oddone
Not to say Regi isn't a good Zed player, but I don't think the focus should be on Regi, or Zed, when looking at his score.
It was mostly TheOddOne going into Mid and helping Regi with those kills, helping him get fed. Ask ANYBODY: Zed vs. Ahri is a skill match up. Regi and Oddone both knew this. It was going to go either way until Oddone started coming in and helped Regi.
It's an impressive score, however this is not because of Regi, and it is not because of Zed --- it is because of Oddone.