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the DR650SE is not much different to the XR650L 
so not sure it can be listed as years ahead of the XR650L
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Differences: The XR650L is a much more radical concept: You are lost if you're short and better have a savings plan in place to be able to afford frequent drive chain & sprocket replacements (I did ride an XR600 which also does not have a cush drive damper).
Ther DR's front brake is more than sufficient for a bike of this class, even after a 17 year production run which you can't really say about the undersized and fading prone Honda front stopper.
The DR is very happy on tar and as a commuter whilst still outperforming a lot of other DS bikes when it gets dirty.
The XR650L's qualities clearly lie on the dirty side of life.
The DR's headlight is ok. The Hondas headlight is a joke. Make sure you're home before dark.
The DR engine is about a decade ahead of the XR600 / NX650 / XR650L engine: SACS air / oil cooling and coated aluminium cylinder vs. air cooled & sleeved cylinder. The Honda RFVC concept is overly complex and did not stand the test of time.