I tend to think that for many people, it's the case of "that which you are used to" sets the standard/baseline against which people judge mics.
100 percent agreement from me.
when I use the Senn MKE600, I find the Senn quite "bassy" - but is that because I'm used to the 875R, or because the Senn is really bassy?
It's funny, because I find the Sennheiser MKE600 to tonally "balanced" that is a little bit "bright" with a good lower end. I sold my Rode NTG-2 mic after buying the MKE600 because it sounded very "muddy" with almost no high end compared to the Sennheiser.
I had the opportunity to compare the MKE600 with a Senn ME66 shotgun
I've always thought the ME66 sounds terrible. Very "tinny" with no bottom end at all. I've never understood why anyone would recommend this mic other than it puts out a very "hot" signal which is good for low cost crappy cameras and recorders which have terrible mic preamps.
Sanken CS-3e, as everyone assured me this is head and shoulders above all mics in the below $1K class (shotgun)
It's got that heavy "FM Radio" thick bass, but everything else sounds great, and it's very directional which is good if you can aim it properly.
there are such things as charts that can show you how closely a mic picks up what frequency
...But then you try two different mics that on paper look the same, but when you actually use them they are quite different.
but I really wonder how much difference that makes ultimately when it comes to dialogue... the human voice is in a fairly tight frequency band compared to what an effects mic must be able to pick up neutrally without favoring this or that frequency, so it's easier for most mics to be pretty accurate within the human voice frequency parameters
Almost every voice-over artist I've met usually has their favorite mic that they feel produces the best quality sound for their voice. I see this over and over again, so I don't think anything is set in stone.