It is hard to believe a bloke who had a 91% tackle efficiency rating in defence was prone to get himself into a "poor position" or to be "not the best reader of the play" because had he been either of those things he would have a much lower tackle efficiency i.e. he wouldn`t have point blank missed all of the tackles, but there would have been a lot of missed and attempted tackles and that would have lowered his tackle efficiency rate.
You rely heavily on the stats that are printed but I suggest you have scant knowledge of how those stats are garnered or the sub layers of stats that are below each heading.
Not attempting or missing a tackle if you are dummied to or side stepped donot necessarily count against you as a missed tackle there are many nuances as to what constitutes that stat that’s why I don’t just rely on it.
Same as if you rush in to make a big hit and the cut out pass creates a 2 on 1 and they score doesn’t count against you as a missed tackle either. Sadly that ends up counting against the winger.
Tackle efficiency is only based on tackles attempted as against completed so again if you are beaten all ends up and make no attempt then it doesn’t count against your stats.
Lack of pace to get to the tackle or inability to turn and make the tackle don’t count against you either but there are separate stats collated for that as entity of their own.
So headline stats are not all they seem to be.