Can anyone explain Masterwork Armour?

[DracoSuave]

What players get in Essentials caters to AC only. Pity.

Sorry essentials only covers the basics?

What is also sad is that in the CB it is very easy and possible to actually get a non-masterwork armor if you misclick. You choose the simple, magic armor of your choice without noticing the weird names below them, scroll down in levels and you get your armor +6 but without the masterwork bonuses.

That's one of many reasons why we use character builder only to make characters, and not as a rules reference.

Someone new to the CB or in a hurry, could get shafted like this.

CB has many ways to shaft you. Carelessness and overreliance on it are the least of them.