I'm wondering about your comments regarding image quality of the Olympus 40-150 F/2.8 Pro paired with the MC-20 vs the Panasonic 100-300 F/4 at ~6:10 in your review. For me, it appears the left image is much softer than the right. Perhaps an edit error in the video or caption? Is the right image actually the 40-150 F/2.8?
I'm considering purchasing an E-M1 MK II as my first M43 camera and while the 12-100 F/4 seems like a good option, being able to double the focal length of the 40-150 might push me to spend a little more and purchase the 12-40 and 40-150 F/2.8 lenses instead. That decision might be hanging on whether the left or right image is the 40-150.
For someone starting out fresh in the M43 world with an E-M1 MK II, if you have a better recommendation for a long, sharp lens for wildlife at about the 40-150 price point, please don't hesitate to mention it.
A quick answer is that the Olympus lens is way sharper in this test