They have mentioned that they're working on item comparisons. Specifically:

Quote Originally Posted by Okipuit View Post
We're considering changes to show the status window for gear in your inventory and currently equipped gear together when placing the mouse over items in your inventory. However, should it prove to be difficult due to screen or UI constraints, we will find a way to easily compare your currently equipped gear and other items.
Annnnd this is why I love this game.