Don’t trust everything you read. It is wrong. The Olympics by the rules must be a 4*. I know people who rode it and I know the rules of my sport. There is no such thing as a 5* in eventing. The course was not as tough as WEG or other 4*…but had some tough questions mostly as a result of the terrain. It did have options to make it softer but take up more time…as is typical. It was a course they thought would favor the nippery/cattier horses but it proved to be just fine for some of the bigger horses as well.
Burghely will be tougher and bigger in a few weeks…but the Olympics with the team pressure is different.
The PanAms used to be a 3* and was recently down graded to a 2*.