It's a bad injury, but he'll make a fine recovery. Probably faster than a torn ACL actually.
Exactly what crossed my mind at the time. I snapped my radius in an on-field collision but bent the ulna out of shape; because of that second fact, doctors told me it was a freak injury with no surefire way to treat it. Sure enough, three surgeries later, they were right - my wrist will always be jacked up. Point is, everyone kept telling me I would have been much better off if both bones had broken initially.
Ware obviously snapped both bones in his leg, which means they at least have a chance to grow back together at the same time. Once his bones heal, he should have much more confidence on his leg than someone returning from an ACL tear (where you never again feel like you're truly 100%).
The way it happened though it makes me wonder if there's something else going on, like that baseball pitcher whose upper arm kept snapping, and then they found out he had bone cancer.