I hope I was not the target of your response, because my intention was not to piss off anyone. I was making a comparison between the two systems and did not make any emotionally charged statements for or against either art. That's one of the difficulties of communicating over the net; tone can be confusing.
I didn't say that I could beat down a bjj practicioner in grappling with a groin grab; I did state that bjj grappling is more technically advanced than HKD and in a challenge match (like the UFC) most HKD BB guys would lose to a blue-belt in BJJ.
I did say that you can use pressure points, thumb locks etc to loosen holds while grappling, because I have. So have others. A bb judo guy who I used to work out with used a wrist lock to loosen other guy's grips; they had never seen it before. Against a wrestler's ground and pound tactics, they would be both pointless and useless because once the wrestler gets position its gonna be difficult to bridge the mount against an athletic grappler much less strike a press. pt.
Hapkido grappling lacks the ability to change position and therefore get superior position. You are taught to spend as little time as possible rolling and more time trying to get back on your feet, so you will do whatever you have to in order to get standing again. You learn basic chokes and breaks so as to do maximal damage in minimal time plus you use pressure points, wrist, hand and thumb locks to loosen and escape from holds and facilitate transition from ground to standing. Are you familiar with Wally Jay's small circle jiujitsu? Its very similar.
Unfortunately HKD grappling assumes that your assailant is not a technical grappler. If it is you are in trouble.
FYI-I have never resorted to groin grabbing in a gym, unless its my own and I didn't wear a cup to MT class
Flame off