Hashimoto vs Boheng is the best rivalry that could have happened in men's all-around. Uchimura was basically ahead of everyone and even when he had problems, the judges would turn a blind eye. I guess we all remember when Verniaiev was robbed of a gold medal in Rio, or when Japan was gifted an undeserved team silver medal in London.
This time, however, the judges are not eating up Hashimoto, and Boheng has the talent and the mental strength to challenge him. The only problem for me (and this has nothing to do with the quality of his gymnastics, just a pet peeve of mine) is that Hashimoto, pretty much like Uchimura, is as charismatic as a cucumber.