The current interface for equipment stats gives a general idea of how strong an item is at a glance, but it would be greatly improved if we were given actual numbers to go along with it. A few of the main reasons are:
A) Numbers are much easier to compare at a glance than bars.
B) Numbers make it possible to easily categorize items in the wiki and other out of game resources based on stats.
I think the best way to go about it would be to place the stats on the left side of the bar, in a similar way that the labels for the bars are implemented. Like this:
At the very least, we should get an arrow during comparison telling us which is higher. Having to count the number of bars (and they might not be to scale, too!) is really annoying.