Canon RF 28-70 at 50mm vs RF 50 f/1.2L at f/2?

The RF 28-70 f/2L is meant as a lens to replace prime lenses, f/1.8 prime lenses that is. Now, you may find its versatility outweighs f/1.2, however, f/1.2 is still unique, and I'm a sucker for f/1.2. My trouble? Candid shooting makes the versatility of the 28-70 f/2L and not having to swap a lens, a huge boon. That said the 28-70 f/2L cannot replace the special spark a 50mm f/1.2L or 85mm f/1.2L does, but it does event based photography "better" as you always have access to f/2 across the spectrum. It's a very different kind of lens than prior f/2.8 zooms in that it actually can challenge a prime in terms of sharpness, contrast, bokeh, color. It cannot by nature do f/1.2 though, but otherwise it's obliterated the other differences making the line blurry between a zoom and prime. It does come at a cost of price and weight though, and cannot do 24mm, but I haven't found it to be a problem.

At 50mm, even at f/2, it's sharpness, contrast, are strong. I can say I'm the weakest link in the chain with my amateur skills paired with a pro lens

The flare resistance is impressive as another lens in these conditions would be "dead". I like the dreamy look it's bokeh gives in not just quantity, but quality.

The RF 28-70 f/2L is the better event, candid, wedding shooter. However, the RF 50mm f/1.2L is unique, is the better staged portrait shooter, low light king, but f/1.2 is often too shallow. The 28-70 is more versatile. It’s a hard decision and I wish I could say sharpness was a flaw to make it easy, it’s not that easy…