light skill vs strength

[sanjuro_ronin]

could be due to weight classes.
When you look at it, getting a line drive to the chest is striking with tremendous force.
Two 170 lb guys punching each other might not equal that force.
Now, take two Kyokushin guys, one 170 lbs, the other 250lbs...you might find different results.
just sayin..

There were no weight classes in Kyokushin till about the mid 90's.