Bgavins measurements and the measurements in this thread
http://www.talkbass.com/forum/f15/bass-frequency-waterfall-plots-what-they-mean-rigs-510749/ don't seem to agree.
Now...before anybody starts arguing about it, I for one, think they're
both right.
I think there are way too many variables there to just say there's only one answer that applies in all cases.
Think of how many different sounds you can get out of a bass just by how and where you pluck the thing, let alone different pickup types and their placement, string guages and type of winding, etc. You get all those different tones because all those things change the relationship/ratio of the fundamental to the harmonics and the ratio of all the different harmonics to each other. Pluck (or pick, or slap, or thumb) the bass one way and you'll get a big fundamental, do it another way and you'll get a subdued fundamemtal, and many ways in between the extremes. And that's all before the sound ever gets to your amp.
Again, I think they're both right, just different.
In order to get a real even comparison, in addition to using the exact same bass, signal chain, measurement tools, etc., I think you'd almost have to have a machine play the bass to be sure it got hit the exact same way every time. Do that at all the little different points along the string length and you'll get a bunch of different results. Let a human get their hands on it, and you'll get different results still.
Bit of a mix of science and art...and the human factor. Way too many things going on to just have one answer that applies in every case.