Depends on the form it is in. Pellets and course ground are not considered "sweet" ... Even aglime comes in three basic grades. Pellets, course ground, and powder (more or less, yes I know there is no "standard" per se even in the ag sources folks)
Basically the "sweet" label is about how available it is. Greater surface area of the powderized form is what the recipes are aiming for. Will dissolve/absorb/be utilized at a faster rate. The super soil concept is geared to not having to cook your mix for 6 plus months before its even close to ready for short grow period container methods. You can get away with less time more or less by using highly available, powderized, dry amendments.
When doing amendments, it all depends sometimes on how fast you want to cook it up. Plot amendments where you're coming back 6 months later you may want to adjust the recipe using courser materials so there is more availability later on in the year.
Hope that helps.
