No, not really.

Dynamic loudspeakers and dynamic microphones are the same thing. They always have been the same.

They've got the knobs for the design variables turned in different directions, but they're still the same.

They even have the same frequency response whether they're being used as speakers or microphones at the moment.

Which brings up a valid way to measure the response of a microphone's design:

Use two of them. One as a speaker, and the other as a microphone. Play measurement-sounds out of one, and record the results on the other. Plot it out.

The deviations are magnified, but eliminating that magnification is just a math problem -- not an instrumentation problem. :)