I think Tydeus explain the situation way better than i could possibly do , its all about thoses 2 attributes
As of now Str gives way more benefits than Agi , it doesnt matter which build you do ,
we could say tons of variables or situations , but in the end : Str is superior to Agi
before the changes i was 15\36 , back then weaponmaster was worthwhile , agi builds were worthwhile and a crpg plague to some ( not in my view but ok)
people whined too much about WPF difference ( retirement was causing the imbalance with the bonus wpf to retirement not agi )
we know whats the situation now , Agi has been cruficied and Str is the King of the hills
Ill leave tydeus being my representative in this situation , he haz the writing skillz to explain in a neutral way