They released the MI300 which beats a H100 but is close to a H200.

Actually, this hasn't been shown yet. AMD showed some "on paper" specs which could "theoretically" be faster than a H100, but they didn't show any practical tests which could be recreated by third parties. Also, some of the tests AMD ran on H100's were deliberately not using the correctly optimized software, massively slowing down the H100 performance...

As a result there is a lot of sceptism as to whether it's actually faster in real world scenarios. There are a few articles explaining this situation. Here is one: https://www.forbes.com/sites/karlfreund/2023/12/13/breaking-...