While still doing substantially more damage than the others, out farming them, and winning more games. There was a reason a lot of teams respect banned Techies against EG.
teams also respect banned techies vs secret in the group stages hero was banned 25 times in total at ti5. Before ti5, people knew secret as the techies team, not eg. And I'd say teams banned techies in general.
You look up datdota, and most of the game he was in (even ban wise) didn't even have EG as one of the teams. He was just an annoying hero to deal with esp with the tusk combo. Hence, ban him against any team.
Aui's Techies was really good, don't get it twisted. Why the fuck would a then top team like CDEC waste a first round ban on a "bad Techies"? Sure, they were bad against it, but you still need to be a good Techies player to take advantage of that. Techies in 6.84 was strong but it wasn't "win TI games without knowing how to play" strong, no hero ever was.
Aui played Techies as a space creator from what I recall, not a hero killer. He'd scare the opposition from ever feeling comfortable pushing out or diving too deep(or basically going anywhere that wasn't a lane on their side of the river), so all of his teammates could get super farmed and win the game ez.
Just saying, people banned techies alot at ti5, not just because of aui and I think its a weird statement to make that icefrog nerfed him because of that when as you said he didn't play him as a hero killer
http://www.datdota.com/tournament.php?q=451&tournament=The International 2015&p=heroes
picked 8 times, won 7 out of 8. Clearly not super easy to play