They have the same pattern as they're the same reflector, one is just a higher output bulb. Like I said, they were misaligned. Once I got home I could see on the garage door (from ~6' back) that the cutoff of the left foglight was about 4" higher that the right. There's a small vertical adjustment wheel on each unit so I've now adjusted them so they match, at the same time adjusting them to be the correct height. I'll post another set of comparison pics when I can.
[science]
The point of fog lights is to throw light low and wide, beneath the fog/rain/snow to aid in illuminating the sides of the road and immediately in front of the vehicle. Low beams are designed to cast light down the road so you can see further when you're traveling at a higher (normal) speeds. In the case of the Explorer in particular, low beam often lacks illumination directly in front of the vehicle, partially because you're eyes should be focused further down the road anyway, and partly to avoid your eyes adjusting to expose the well lit foreground at the detriment of distance vision. Fog lights are there to help to fill in this 'light void' but are only of use in inclement weather conditions when you should be traveling slower anyway and would be focused on the road closer to your vehicle. In this situation having more light will NOT be detrimental to visibility.
[/science]
If the weather is bad I want as much light in front of me as possible to light where I'm going. I've driven in conditions where without foglights I would not have been able to see the side of the road or my lane markings above walking speed. I'm not looking to cast light higher or further down the road, nor in conditions such as those am I looking to be suddenly able to drive at 60mph, but I want my lights to penetrate deeper/wider and a higher output bulb will facilitate that.
