Sorry but so far only Mike's Tavor does 1.5moa and only with one type of ammo. Most other reports from Tavor OWNERS are not so flattering.
Almost all AR's will do 1.5-2 moa with most types of ammo as long as the shooter does his part.
It's great you love your Tavor but you are arguing with nothing to back up your claims. The AR has been around a long time and it's well known what it is capable of. Instead of yapping about how great the Tavor is and how accurate they are why don't you show us some groups from your rifle. Go buy some of the targets with 9 orange crosses on them and make 5 five round groups on the one page. The average group size of the 5 targets is what YOUR Tavor is capable of. Mike's spending a lot of money testing ammo and showing the results. He's done a great job showing that with the right ammo and if you take your time the Tavor can be pretty decent off the bench.
If you're so confident then give it a try. Use any ammo you want but all shots count and no waiting 5 minutes between shots to let everything cool, these are semi auto's and if they can't perform being shot semi auto then what's the point? You may as well buy a bolt action and get 1/2 moa all day long.
Also why would you limit the AR selection to a rack grade milspec rifle? If you're comparing to the Tavor which is $2700 new then why not a $2700 AR? That price puts you up into JP, Noveske, LMT, KAC levels of performance which... well you know what would happen.