There's different opinions about validity of Stereophile's measuring processes, The late John Dunlavy was not so happy with these.... Pat McGinty of Meadowlark Audio was even more critical, there's probably many opinions about this....
When I auditioned Mahler I compared them to a whold bunch of speakers on the market here, I am quite allergic to resonances and deviations and such big deviations as shown in Stereophile measurements are very clearly audible... I regard these measurments of Mahler as very questionable....
There are others who have measured Mahler to be quite linear, I have seen measurements of these being almost ruler flat except for the bass... they may be quite bass heavy in smaller rooms....
http://www.viennaacoustics.at/reviews/Heritage_Mahler/Stereoplay_MAHLER_Germany_199906.pdf
(Well still not perfectly flat according to Stereoplay)
I think it's strange to read bombastic comments about speakers based on questionable measurements and about speakers people have not listened to....
I had the opportunity to verify against Duntech PCL-15's that are +/- less than 2 dB from 80Hz to 20 KHz, those speakers do not play load but are extremely linear.... and at not loud levels plays music as musical as I have ever heard from any speakers....
The list of speakers that I auditioned includes:
Dynaudio Contour S3.4, Audio Physic Spark III, Audio Physic Tempo IV, Von Schweikert vr4 Jr and Sr, Meadowlark Kestrel 2, Vienna acoustics Beethoven, Dynabel S33, Avalon Ascendant, Vienna acoustics Mahler, Audio Physic Virgo III, Audio Physic Avanti III, Dynaudio Contour S5.4, Audio Physic Avanti III + 4 * Audio Physic Minos subwoofers, Dynabel Euforia, Mårten Design Miles III, Audiovector S6 Avantgarde, Bowers & Wilkins Nautilus 801, Bowers & Wilkins Nautilus 802, Bowers & Wilkins Nautilus 802d, Bowers & Wilkins Nautilus 803, Bowers & Wilkins Nautilus 804, Revel Performa F50, Respons Grande Artist, Energy Veritas V 2.8, Proac Future Point two... (more recently also some others including Avalon Acoustics Indra)
And in my opinion.... Out of which Generally, the Von Schweikert, Audio Physic models, Dynaudio S3.4 and Vienna Acoustics Mahler clearly was the most natural speakers... all the other ones had more or less colorations, resonances or other deviations... worst ones was in my oppinion the higly regarded B&W and Avalon Acoustics speakers.....
So are the Mahler's so horrible speakers as many around here believe... it's up to you to have your opinion... I have my opinion

Amongst the speakers mentioned above, they are probably the best of the bunch......
So it's one out of two:
- Either my hearing is horribly skewed, or
- The Mahler's are fantastic speakers
One out of the two above is correct, wonder which?
Well yes, if the speaker allows for this but many speakers are not coherent at this distance... and if you blindly measure at tweeter axis you may not get the correct balance... some speakers will not jist sound correct like this.... ref previous discussion about Dynaudio Consequence UE
JA has to measure this way coz he doesn't want to measure his room but the speakers