OTOH, deli turkey is mostly very lean meat with little fat, and fat has by far the most calories of any macro. Hot dogs, on the other hand, are filled with various vegetable oils (which are made up of fat), as is normal for processed meat products.
Worth noting that deli meats are often very high in sodium and can still contain non-trivial amounts of cholesterol especially if you like building mountainous sandwiches like I do and consume multiple servings at a time.
I swear I saw diets where fats can cause satiety or induce ketosis etc. Then I read oils are very energy dense and your body can absorb its calories with an efficiency that makes a SMPS blush.
Of course, and (AFAIK) keto was originally a diet high in fat and very low on everything else.