Once a golfer starts a round, the statistics by which all comparisons are made will be within fixed parameters except for the outcome, because each round of the tournament, each hole on the course, follows a predictable layout, so to speak.
The crux of the Premier League's concern is that ESPN will now lose its incentive to bid in the next round of auctions because it will have the option of buying content from Sky, at a fixed wholesale price, but that seems unlikely.