Light gathering in M43 vs FF

Re: >>Same scene, same placement, shot wide open at say ISO 200. Assume that processing between the cameras is exactly the same, I set the exposure to 1/100, will I get the same image in terms of amount of light gathered?

I think what has caused all the noise on this thread is the ending phrase: "in terms of amount of light gathered?"

If you had asked, "will I get the same image in terms of correct exposure?" then the answer is easy, it is clearly "Yes".  That cannot be disputed.

But "in terms of amount of light gathered" there is a difference.  The total amount of light that reaches the sensor is less for micro 4/3.  HOWEVER the sensor is smaller, so the light intensity at the sensor IS THE SAME.  If you had asked "will I get the same light intensity at the sensor?" then the answer again is clearly "Yes".  That cannot be disputed, either.

But since you asked "in terms of amount of light gathered",  a metric which I say does not matter at all, you got the only correct answer to that question: "No, micro four thirds gathers less light".  Can anyone convince me that that matters?

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js