I agree with pretty much everything Mtljogs said here. I can't stand when people say that a championship race was "a x,xxx meter jog and then a 400m sprint..." That's BS. It's not a jog. No, they're not going all-out, but that doesn't make it a warmup. It's also not some team workout where there is a pre-determined pace that everyone has agreed to work together to hit. They're running bunched-up, tense, watching their steps, worried and tactically waiting to respond at any moment to someone putting in a surge. If it was a warmup, then the fastest 400-800m guy would win easily every time, which they don't.
Centro won because he was in complete control for the entirety of the race. In the later stages, when Kiprop was throwing in surges to try to pass him, Centro masterfully hung onto the inside lane and responded to every surge perfectly to maintain his positioning. He mentally and physically bested everyone in that field. He also responded to Makhloufi's final 100m kick, which you would think would be much stronger than Centro's... He saved the perfect amount of strength and energy for his kick, and executed everything perfectly.
Let's take things down to a lower, more relatable level of talent and racing atmosphere... You're at a local Turkey Trot. Let's say you're a sub-15 guy over 5K, and at the starting line, you spot the local high school's best runner. He has a 16:30 PR, but also runs a 1:59 800m on the track. You've never come close to cracking 2-min in the 800m. It's not your event.
You're there to have fun, but you'd also like to win, so you go out and run 5:30 pace for the first 2 to 2.5 miles. That's >17-min pace over 5K, so it's pretty damn easy for both of you.
In the last 0.5 to 1 mile, things start to heat up, and it becomes an all-out, kick finish over the last 400-800m. You (the sub-15 guy) are going to win. I don't care that this other guy is a faster mid-D guy than you. There's no way some 16:30 guy is going to beat you, because you're head and shoulders above him in talent and experience. Sure he's faster over 800m, but not after having gone through the physical and mental strain of 2 miles of racing beforehand. That pace may have been easy for both of you over the first 2 miles, but it was you who was in control. You dictated that pace, because you're the better 5K guy. If he tried to surge, you were going to respond easily. It would be a "sit-and-kick" style race, but it is still a full 5K, and the better 5K guy is going to execute the "sit" better to ensure that he also wins in the "kick"...
I don't get why people get all up in arms over these types of races. If you're a somewhat experienced runner, then you should realize what it is that you're watching, and you should recognize and understand the little nuances that make championship style track racing exciting. To me, people who openly whine and complain about slow Finals races are just outing themselves as "hobby joggers" (for lack of a better term). They have clearly never run in a high-stakes race where everyone in the field is capable of running amazing times, and anyone at any moment could break things open with a surge. It's intense, it's nerve-wracking, and it's exciting. If you can't see that, then you don't know what you're watching.
Only thing I disagree with you on is the remark about how the race "determines the best runner in the world that year". That's debatable, but that's just the nature of sports. The Patriots in 2007 were the best team in football. I don't care what anyone says, they were by far the best team in the NFL. BUT - they didn't win the Super Bowl. So, it's really up to the fan to decide: are you really the best team if you don't win the Super Bowl at the end of the year? Does winning the Super Bowl make you the best team? If that's the case, then the GIANTS, who barely made the wild-card spot that year with a 10-6 record, and then sneaked their way into the Super Bowl were the best team in the NFL that year...
I highly doubt many people would agree that the Giants were unequivocally "the best" team in the NFL that year, but that's not the point. If the best team (or runner) always won, then there wouldn't be a championship. There would be no playoffs. There would be no semi-finals. There would be no finals. There would be no fun. That's sports. That's why they are fun. Anyone can win on any day, against any opponent, and in any conditions. Flukes happen. Upsets happen. That's sports. It doesn't matter "who is the best". You don't get to just show up and win.
"Who's the best" is such an objective phrase, and there is no award for "the best". There's a champion, and there's a loser (or losers). The goal for an NFL team is to win the Super Bowl. The Patriots were the best team the entire year, but they lost the Super Bowl. They failed their goal. They were losers that year. The Giants won the Super Bowl. The fact that they weren't the best does not matter. They succeeded, and they were winners that year.
Every 1500m runner at Rio had the goal of winning the finals. That was the prize. Go through the semi-final rounds, and get yourself into position in the finals to win gold. Centro did that. Centro was the champion at Rio, and he'll always be the champion at Rio. Doesn't make him the best, but it does make him the champ. Why is that such an insane concept for people to just accept...