How much was Gwok Jing like his ancestor from THE WATER MARGIN, Gwok Sing?

[Ken Cheng]

This question is for people who have read both LOCH and that classic of Chinese literature: THE WATER MARGIN.

In LOCH, Jin Yong established that Gwok Jing's ancestor was Gwok Sing, a minor hero from THE WATER MARGIN. Based on what you know about both characters, how much did Gwok Jing resemble or not resemble (in terms of personality, temperament, and behavior) his ancestor Gwok Sing? Were they cut from the same metaphorical cloth, or is the surname really the fully extent of their shared lineage?

[Ken Cheng]

One thing that didn't get passed down from Gwok Sing to Gwok Jing was the Gwok Family's signature halberd skill. Apparently, Gwok Sing had mastered the halberd to the extent that he was often compared to the legendary Tang Dynasty general and halberd-wielder extraordinaire Sit Yan Gwai. The skill managed to pass down to the generation of Gwok Siu Teen (though I assume Siu Teen's skills with the halberd were inferior to those of Sing) but was thereafter lost to the Gwok Family because Siu Teen died before his son Jing was born. Thus, the association between the Gwok Family and the halberd ended in Gwok Siu Teen's generation (just as the Yeung Family Spear Technique stopped passing through Yeung Teet Sum's lineage after Yeung Hong).