OK where exactly does that come from?
A DA*200 stopped down to 4 is not better than an FA*200 macro. although i expect that will be close.
The DA*200 stopped down to ƒ4, 2026.5 lw/ph.
DA*60-250 wide open at ƒ4 and 299mm 2018 lw/ph
These lenses are virtually identical at 200mm despite one being a zoom and one being a prime, one opening to ƒ2.8 and one opening to ƒ4. By ƒ5.6 and ƒ8 the 60-250 is noticeably better even though it's an ƒ4 lens. Maybe you have an example of what you are discussing.
SO far I'm one for one in the discussing the two lenses I own. Personally I see no need to go further. But if you can come up with a couple examples.... I might consider the possibility you are on to something. Current evidence suggests otherwise. YOu have to check, lens by lens which is better. The generalization you propose is probably going to be wrong as much as it's right and therefore of no real value.