Cheung Mo Gei is notorious for having poor combat instincts despite his great inner power, but I don't see Hui Juk as being much better than Cheung in that department. Hui Juk can get away with it more readily, however, because his inner power dwarfs those of his opponents even more than Cheung's does to his.
If we were to level their inner power (e.g. make them equal in this area), however, who would prevail in a Hui Juk vs. Cheung Mo Gei fight?