Yeah, I wouldn't be surprised at all if they're too dim to be useful. That's been my experience with LED's in other automotive applications claiming to be super bright this, crazy bright that.
The truck has DDM 35W HID's in it now and they're just not very reliable. When the truck sat up a while the headlights came on by themselves and stayed on, burnt the relay harness. I replaced it and for whatever reason they no longer both come on every time the lights are turned on, gotta flick them off/on again to make both sides start. Tried replacing ballasts and bulbs, no difference. Whatever. Kinda fed up playing with aftermarket HID junk so I thought I'd give these LED's a try to see if they've finally reached a useful quality level.
Richard