[Not KLR related]
what a bunch of horse manure. 
Which part exactly??
Have you ever ride a 640 on a rocky road? You're bouncing on a pogo stick, the suspension is made for smaller enduro bikes.
Suspension needs to be setup according to rider and application. That WP set of forks can be tweaked in ways the Dakar can only dream.
The facts:1) I've owned a Dakak for 9 months and 13000KM.
2) Dakak weighs almost 20KG's more than the 640 (you do realize how much this is yes?)
3) Ergonomics of the Dakak has you sitting way too far back from the front wheel and much too deep in the saddle
4) Dakak forks: 41mm conventional no-name brand
5) 640 forks: 48mm USD WP (the brand which ALL
real Dakar racers actually use)
6) Front suspension travel Dakak = 210mm, 640 = 300mm
7) Rear suspension travel Dakak = 220mm, 640 = 335mm (that's a 3rd more travel)
From the facts stated, the Dakak not only weighs crap loads more, it's got an uber weak suspension compared to KTM.
Like my opening statement read; it depends on the type of person.
Dakar is ample for the refined red wine connoisseur (aka the guy that's been there, done that, and moved on in life) who is not interested in fast paced twisties.. where the 640 by the way shines.
My intentions were not to rip anyone or anything off. As we humans all differ in age, requirements etc. , the bikes do too.
Both bikes are excellent for the right purpose, that's all.
No need to get your BMW panties in a bunch.
As a final note: I don't own any of said bikes/brands and my opinion is thus not biased.