in theory yes, show me a 990/950 that has had to stop a mud ride because of it.
the effects you are talking about are minor, same as tires
I actually made the comment based on the 950 that I have been riding for a while...I think Michiel has a pic of it somewhere.
But then, for me..tyres make a huge diff as well. I recently rode a DR with Mitas on (not sure which one, E- whatever) and compared to the Mich Desert, quite a diff...
But let's not detract from Runners build, a good looking bike looking better.