Luxeons vary greatly even within the same bin.
Two Q3's driven at the same current can vary from 30.6 to 39.8 LM according to Lumileds.
If you read the comments of Peter Gransee and Mr Bulk, both of whom have seen a lot of luxeons, they both say that luxeons from the same reel/same bin can vary even more than this. Both of them say that in a reel of the appropriate bin for their uses, they have to discard many luxeons for not being as bright or white as they are supposed to be.
Also, Surefire has never revealed their standards for which luxeons they will use in the KLx. We know they will not use the greenies and that they tend to the blue/violet but we have no idea how much variation in brightness they allow.
Thus, comparisons like this are pointless. Luxeons just vary way too much at this time to predict which will be brighter even if we did know what Surefire is using.
End of rant,
Pat
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