OMG could rock, when sung right. The version from the End Of Days is just a disaster, Axl's vocals are horrible and ditto on RIRIII.
But with the rasp and some tweaks... It's got a killer chorus, that's for sure, and some amazing lyrics.
The chorus is killer. I just want to hear OMG for once with some real raspy vocals. You can do it Axl!
I couldn't have said this any better.
As for wikipedia, that is not the best place to go for concrete information; Chinese Democracy being a prime example. If you are trying to make a major edit, you really need a source. If a source like that came out we all would know about it anyway...