Not sure what the argument is about but I agree on a possible difference of perceptions – Sephardim start with basics and do them well and even when learning Gemora focusing on peshat and practical implicatiosns, with Ashkenazim focusing on lamdus. Similar to a professor from my bubba’s lessons – why do I need arithmetic, when I am professor of calculus (she was evidently not a Brisker). This latter approach used to be controversial by Maharal, etc. Our time brought a new challenge when we have. Baruch Hashem, multitudes learning rather than just yachidim. I suspect lamdus goes with them as well as calculus with most of college students.
As to testing sugyos, I would suggest first test ability for sevorah, ability to reason logically, that is a prerequisite to any meaningful lamdus.