Score jacking? I don't think there is such a thing. Even if you play the forward tees, the scoring differential evens it out. You could shoot a 75 with a scoring differential of 10, or shoot an 82 with a scoring differential of 10.
I think the challenge is how each of those use cases is represented. The first is just "I shot a 75" with no additional context. The second is "I shot 82 but on a hard course. It was 10 stroke differential"