What makes the 28-200 really special even vs those other 2 super zooms is the f2.8 wide end and the fact that it's still f4.5 thru around 112mm IIRC. It's like having a fast-ish standard zoom with a solid variable tele on top of it, all in a relatively small and sub-600g package.
The one I am interested EF 70-200L/4.0 IS II vs 70-200 GM @200mm/F4.0 in TDP test. 70-200 GM is known has copy variation, and I am not a big fan of studio test in close distance on resolution chart but prefer outdoor test from distance to be more resemble in real-world usage. So just for reference.
Canon RF 70-200mm F2.8L IS USM vs. Sony FE 70-200mm F2.8 GM OSS vs. Nikon Z 70-200 F2.8 VR. Side by side. 3 lenses compared. 70–200 mm. 70–200 mm. 70–200 mm B1Pet.