For one they are stronger. I've seen numerous posts of blown auto hubs but I haven't heard of the Warns going out. (other than from improper installation)

Also they give you instant positive lock, meaning they are either fully engaged or not. When rocking the vehicle back and forth they don't unlock.

The only downside that I see to them is that they may eliminate the natural weak point of the front end, thus you may end up making a new one like an axle. I'll likely be installing the warn hub fuses to maintain my weak link at the hub. They are easily changed out on the trail in about 10 minutes per side.

Here is a pic of the Warn standard and fused. Notice the smaller teeth on the right. That is what is meant to break instead of MY AXLE.