Micro four thirds - does the crop factor apply to MFT lenses as well?

Thomas Kachadurian wrote:

Completely wrong. 1/200 @ f2 with ISO 200 is the exact same thing on any camera. If you try to change your exposure for the format you will end up with poorly exposed photographs.

It's so sad to see people who just discovered photography in the last few years giving out misleading advice. It doesn't matter what format you use, film, digital, 4x5 or 16mm, APS-c or an tiny sensor on a powershot. The amount of light for a correct exposure doesn't change. 1/125 at f4 at ISO 400 is the same thing on any camera. Line them all up and take the same photo at the same time and they will all be identically exposed.