Yes, my question was precisely: "would the image I captured be the same", the variable being TIME and not QUALITY, to be accurate.
In other words, will I be capturing the same moment in time?

And, you have a great point there in answering this question. As a silly novice, I was forgetting a quite obvious piece of information: the shutter >>stays open<< for time X for both cameras, and that's decided by the operator.
My thinking was wrongfully based on the inconscious assumption that the shutter would close "when done", which make no sense in a camera.

So, yes, the only parameter left, as far as I can tell now, is whether the shutter-release button in dSLR does more than mechanically opening the shutter, or not. If not, there must be no difference.

Thank you!