If you read my original post never claimed n4/3 was better, just for my uses.
Again I would love someone that has actually used an F11 lens in extreme conditions to comment. They can tell us if it is the same. If you haven't you have no idea.
See here someone that has:
https://www.dpreview.com/forums/thread/4601238
Yes, that is one aspect that doesn't change with sensor size, the aperture number is what determines AF effectiveness. I was recently looking at TCs, as I'm adapting EF lenses and I see on the native Canon cameras, some cameras can't AF properly with the TC due to this. That explains why there is a limited number of slower lenses in other formats.
As for this topic in general, there is still nothing like the 12-32mm pancake in FF format, so even though there are similar size bodies (like the S9) the "small" lenses are still considerably bigger. The closest one is the 28mm f/8 and that one is a manual focus lens that by most accounts is quite mediocre (not to mention it's not a zoom). The smallest zoom, the 18-40mm is considerably bigger (although it does have a nice ultrawide end), about 14-42mm II sized.
Yes, you can point to examples of larger/heavier lenses for MFT (like the largest primes), but those options are to be used as a component in a kit that will overall will still tend to be smaller and lighter.
If I were you, I wouldn't even start a game of "who has what that others don't"—there's no way MFT will win.
All systems have relatively compact lenses, and placing special emphasis on a few mm or a few g is something that's very popular on this forum.
Nikon and Canon 26 and 28mm f/2.8, Viltrox AF 28mm f/4.5, Samyang AF 18mm F2.8, MF 7Artisans 35mm f/5.6 Pancake, Viltrox 14/4 ...
None of those can zoom... I'm lazy to look it up too, but I bet they probably have the same problem as the zooms in thickness and can't compare to something like the 14mm f/2.5 or 20mm f/1.7 in thickness.
Lens size is related to many factors, including sensor size;
[ATTACH alt="there is still nothing like the "24-360mm" pancake in MFT"]3771297[/ATTACH]
there is still nothing like the "24-360mm" pancake in MFT
The above can't swap lenses! I used to use a point and shoot and a separate DSLR, but MFT allowed me to consolidate that into one body. I was actually considering a 1-inch camera to replace my older point and shoot, but in my research, MFT was just better (far more flexible due to being an ILC) and actually ended up costing me less money (I bought my GX85 with 12-32mm for only $300 new). It was "good enough" in IQ that it replaced my DSLR usage too.
The GX85 with 12-32mm is my jacket pocket camera.
When I carry a bag, I have a DW-6 wide adapter for ultrawide (gives me a 9-24mm f/3.5-5.6 in MFT when attached). The 14-140mm is my travel zoom. 12-50mm when I need remote power zoom for video (I checked the ZS200, crop factor is 1.5x in 4K, making focal length 36mm equivalent, worthless for what I typically shoot for video, which is wide). I can fit all of the above into a small DSLR holster! I doubt I can do the same with an FF kit. Also have a TT350o clone that I hang on the side for when I need more powerful flash.
Recently I got a used 55-250mm STM and EF-M1 adapter for cheap (and a great deal also on a used Metabones Ultra 0.71x), works well from my testing. Gives me a 500mm equivalent FOV. I previously got a C-180 1.7x conversion lens for my 14-140 and tested it with the 55-250mm and it works with AF and without vignetting above 135mm, giving me 425mm in MFT or 850mm in FF terms. Saved me from potentially having to get a 1.4x or 2.0x TC (which was where I found the issue mentioned above about aperture number and AF).
For full-frame and MFT, f/3.5-5.6 are completely different things, and it's not just about AF.
f/3.5-5.6 in MFT is "good enough" for me. My point is FF doesn't have f/7-11 options, which would likely be what is needed to have a lens the same size as a 12-32mm.

huge FF kit lenses
I have Nikkor and newer used it. It just doesn't make sense for me, when instead of two lenses, I'd rather take a larger, but one 24-120/4 (180 mm in APS-C crop)
All of those are twice the thickness and more than twice the weight of the 12-32mm, again proving my point! Basically a GX85 body with the 12-32mm is the limit in thickness for a jacket camera for me (I did extensive comparisons even with APS-C cameras, getting lens and body profile measurements). Any thicker in the lens and it would not fit.
The only other candidate I found at the time was the A6000 with the 16-50mm OSS, but that lens is undersized for the sensor at 16mm (5EV! vignette in corners with corrections off) and has horrible edge and corner sharpness as a result (actually relies on software to stretch the image to hide the black corners), a deal breaker for me given wide is where I shoot the most and many times for group photos where the edges matter.
Edit, a picture tells a thousand words, here's the smallest lens in your examples with the smallest camera that it works with (A7C) vs my GX85 with 12-32mm (and to be clear the GX85 is not the smallest camera I could have got, I consider a GM1/GM5 too but got the GX85 because of a great deal):
