He wasn't gassing out after a round. If all we were looking at was not getting tired, you'd lean towards someone like Diaz or Bisping, but neither was in the same world as Romero for power, strength and those aspects
Sorry, "not gassing out after
a round" ≠ The BEST Conditioning EVER, either.
What's wrong with you, to write something this daft?
The BEST Conditioning
EVER requires a little bit more scrutiny than "not getting tired after a round."
The Diaz brothers' stamina was 1 -part good conditioning, 1-part lazy style. They were relaxed, didn't expand a whole bunch of effort, and were very tough. People would often punch themselves out him trying to KO one of the Diaz's, and then would lose. But they weren't exactly dynamos in the cage either.
Part of assessing the BEST conditioning EVER = the ability to put out A HIGH-ENERGY OUTPUT ... and to sustain it for A LONG PERIOD OF TIME.
For example, many people can jog for 30 minutes. But no one can run
full blast for 30 minutes.
Jogging doesn't take much energy. However, running as fast as you can takes a ton of energy.
To me the best-conditioned athletes are able to put up A FRENETIC PACE ... and can then SUSTAIN THIS for an exceptional amount of time.
This is the very definition of "Weaponizing Pace + Pressure"
Guys like Khabib, Ferguson (in his prime), Merab are known for this ...