Let a heavy bag to swing to the other side as high as it can. When that heavy bag swing at you, you use your punch or kick to stop that bag. If you can still stand with solid body structure without being pushing back by that heavy bag, you have good power and good structure, otherwise you don't.
The heavy bag will be just like a 200 lb guy runs full speed toward you and tries to knock your head off. If you can stop that guy's charging, your training is on the right track. Since this test cannot be done "solo", Fajin into the thin air make little sense IMO.
Unless you can throw a 90 lb throwing dummy over your head, to say that you can throw a 200 lb guy over your head will need some test. The reason is simple, no matter how much power that you can generate into the thin air, your "body structure" may not be strong enough to take the counter force when it comes back to you.
What's your opinion on this "realistic test"?