With Pie Charts or bars, it would be based on 100%, where the best one has 100%.
The Pie Charts in-game are different depending on ship though. So it might get confusing.
I guess the time is always the same though..
@Genozide, that's really out of the scope for this, since I just intended to present an easy way to tweak the layout.
First off, it would require a static position of the stats, and it would have to store both values of selected and new selection and then have code that transform from one to the other with a delay.
Something I really want to see is which other ammo/tools you have equipped when you're in the item selection screen. Possibly even being able to equip/unequip for all slots in the item selection.