Ash
Michael Lynagh (62)
Rugby Stats had Cooper attempting 12, making 7 (58%), ineffective2 (17%) and missing 3 (25%)
http://www.rugbystats.com.au/matches/rugby/match21312.html
Correct me if I'm wrong, but ineffective refers to how many of the 7 were ineffective, not otherwise. So according to those stats, Cooper made 70% of tackles, 2 of the 7 made were ineffective.
I can remember two missed tackles from Cooper, but no idea on the third. FoxSports had Cooper at 7 tackles completed, 2 missed (78%), which is OK for a flyhalf in an open Super Rugby game, but not great, and not bad. A huge improvement on previous years. Would like to know what RuckinGoodStats had Cooper at, if anyone knows.
Another article from Harris has tackle completion rates for JOC (James O'Connor) at 89% and for Cooper at 83% for this year so far. 83% is not a turnstile, and is a lot better than some of the people here are implying about Cooper's defence.
Harris also had Cooper's at 29 turn overs, and JOC (James O'Connor) at 17 turnovers with JOC (James O'Connor) playing playing about 140 minutes of rugby less than Cooper, so you could add 6 or more turnovers to JOC (James O'Connor) in comarison.
The difference between JOC (James O'Connor) and Cooper this year is not nearly as big as people are implying. I would say that Cooper's error rate is down and tackle completion is up on previous years. There's still some improvement to go, sure, but Cooper is not the speed bump that was seemingly afraid of tackling that he once was.