So BB1 says that his measured are heaped, and you say they are flat. Who would you recommend we trust : the author of the recipe, or someone who has never seen him cook ?
The measures originally given for bb1's base were only given in chef's spoon measures, which he later clarified as being heaped. He later added further clarification by translating his chef's spoon measures into tablespoon measures, i.e. true, levelled off tablespoons - refer to his table.
So, just in case you still don't get it, the measures in his base are heaped, the tablespoon equivalents are not (i.e. they are levelled off)! :
