ooh credits, awesome.
I dont think Hummer Cheng and Silvers Lin are the same person though. theres no reason he would have used two different names between games by the same company.
there could easily have been two programmers - maybe Lin mostly programmed platform games and Cheng usually did the fighting games? Lin AFAIK is only credited on DKC4, Aladdin and TTA6, and Harrys Legend always felt kinda like it was a platformer built on a fighting engine to me, what with the kick attack and relatively large sprites.