I agree that MMA fighters get paid peanuts but you didn't even factor in training fees for golfers and other expenses. Then you based your percentages after the fees. As if golfers have zero coaching or other expenses too..
if you actually the link, the golfer net take home pay for Women #50: $182K
https://golfweek.usatoday.com/2020/01/11/truth-behind-tournament-paychecks-pga-tour-lpga/
that's after factoring in
Expenses
$173,200
Hotels
$22,000
This can be cheaper if players share a hotel room or use host housing available at some tournaments.
Airfare
$11,000
Flights and hotels for limited-field Asian events are free for players only.
Rental Car
$5,000
Unlike the PGA Tour, players rent their own cars most of the time instead of having a courtesy car provided at events.
Meals
$10,000
Breakfast and lunch are free at the course.
Caddie
$76,200
$1,300 plus 10% for aw in and 8% for everything else. Let’s say the fee is $68,700 plus $7,500 for overseas flights.
Instruction
$15,000
This includes on-the-road expenses.
Trainer
$5,000
Mental Coach
$4,500
Agent
$12,000
This is typically 20% of endorsements.
Accountant
$1,500
Incidentals
$6,000
This includes entertainment, physios, tips, Ubers, etc.
Golf Membership
$5,000
May include discounted fees, plus tips to play various places.