@Shoaibexpert, are you kind of stubborn?... We already told you that this kind of subjective BS has no value without facts to back it up.
Soundnews didn't compare both unit blind nor level matched (note the M500 has higher output). I could also come, write my own review and say the exact opposite (M500 being more linear blablabla and whatever I want about it) and some people will trust me for some reason...
The graph you're asking is for Frequency Response. Considering the others measurements, both will be
dead flat. Check the filter graph, I don't see any emphasis on treble and there is no way it has an emphasis on bass either.