2x upgrade vs 4x upgrade (need official answer)

So today i noticed that the the same time on 4xupgrade gives more stats than 2x (test it today before you answer random peps).

So i want an offical answer, should we upgrade our gear to 4/4 or you will change it again and 4/4 will be like 0/2? (on offical 4x upgrade was for SoO gear after some months).

Still no answer.. GG at least post a change log to see if you gonna keep the 4/4 gear.

Day three, still nothing.