Bucking Bronco

Bucking Bronco is one of the Muscling It options on page 26 of GURPS Martial Arts: Technical Grappling. It requires using All-Out Attack (Strong) which boosts CP (+2).
It is an automatic success (like Worrying) but when rolling the Control Points to remove, instead of being based on full Trained ST, it is based on (halved, rounded down) the difference in CURRENT strength between the bucker and the foe.
The example of a ST 25 horse bucking a ST 12 cowboy is used. This would normally be a difference of 13 points. *The horse's current (effective) ST is 22 due to grappling penalties, making the difference only 10.
"DIFFERENCE" probably implies subtracting the ST of the grappler from the bucker, not the other way around. IE if this was a ST 32 cowboy, the horse would probably be out of luck because even though the "difference" is 10 points, 22 minus 32 is -10 not +10.
Category:Melee Attack Options