I'm willing to believe those two dishes represent a wide set of skills and knowledge that would generalize to being a generally skillful cook.
They are also both dishes that are highly forgiving. You can elevate them by replacing the vegetables used in the braise with precisely cooked ones in the final product, by balancing the braising liquid properly, and by getting the final braising liquid to the right consistency but this is largely procedural and involves balancing fewer different elements than sauces that involve spiciness in addition to sweet, sour, and savory.