Internet tales and being able to ascertain the validity of conflicting information is rather a challenge.
Here is another conflicting story, in the article below the BAF Mig-29 pilot says in a nutshell: "In a turning fight the F-16 (GE powered Vipers) lose more energy than the Mig-29, hence the Mig retains energy better."
https://ibb.co/fPsYAFNow I'm not trying to sound like an arrogant Yankee, but according to my countries pilots (like FF who did an exchange with the GAF and flew the Mig-29), it is the other way around. The GE Vipers all have a better STR/P's than the Mig-29. Against the NATO A models sure the Fulcrum "could" be a tad better?
The BAF pilot does not say at what speeds. Maybe at under 300kts, but above 325kts the Block 30/40 even possibly the 50 should be superior.
Problem is if you are not an actual fighter pilot it is very hard to discern actual truth.
And as JB says, you cannot go by airshow demonstrations.
Jets are affected by Density Altitude on different days. You cannot compare an F-16 flying on a hot humid day against a Mig-29 or whatever flying on a cool arid day. You must also take into account field elevation.
When I fly my RG on a cold November day here in the Great Lakes, it performs far superior than when I take in out on a hot humid July or August day.
Unless the jets fly on the same day and under the same atmospheric conditions, an airshow comparison is just illogical.
And if you are not an actual fighter pilot (such as myself), going by internet articles and estimations is quite challenging for the rest of us-