I have some experience with dangerous game rifles, and my preference is for a CRF action, but thats all it is, my personal preference. A M-700 extractor is IMHO not the best example of a PF extractor, and I've had to replace them on several of my rifles. The extracting systems used by Sako, Winchester, and Weatherby are all superior to the Remington. That did not prevent Ross Seyfried from using a M-700 when he worked as a PH. By the way, the slickest feeding dangerous game rifle on the market today might very well be the Weatherby Mk V, when chambered for the .378, .416, or .460.
If you short stroke a bolt gun when you are in a tight spot, you're done. It makes no difference if the action is a CRF of a PF. Short stroking the action is an operator error rather than a design failure. Here's what does matter. The rifle must work every time. If it does not, it needs the attention of a gunsmith. The fit of the rifle to the shooter, a good trigger, and good handling qualities are far more important than the system it was designed with to feed rounds from the magazine and extract them from the chamber. The key here is that both systems were designed to work reliably. If the rifle does not feed reliably, fix it or get rid of it. Do you have confidence in your rifle and in your ability to use it? If so, all is good, but if not adjustments must be made.
When we consider a dangerous game rifle, we might very well choose a bullet with a hemispherical or flat nose. If a round is going to hang up on feeding, its one that has no taper to ease it into the chamber. The CRF action handles this particularly well because the cartridge is held parallel and in line with the bore. Again the Weatherby Mk V solves the problem very well in another way, the rounds are fed from a straight line magazine, with no off set.
The trouble with the whole dangerous game discussion is that it applies to very few people. Dangerous game hunts are almost always guided. In most circumstances, the client's hunting rifle does not fill the same purpose as the PH's stopping rifle. If you make a poor shot on a dangerous animal and it must be followed up in close cover, chances are there is a guide or PH who earns good money to keep you out of trouble.
The very best African dangerous game rifle might not be a bolt gun at all, it might be the double. But to appreciate the double requires one to adapt to a different way of hunting and shooting. I discovered I didn't care for the one I tried, which given my budget is just as well. But those who have made the investment to own and master it, and to hunt in a way that suits it, the double is a dangerous game killer without peer.