Almost every behavior has parameters/variables that can only be retrieved when using "Compare Two Values". This makes things difficult when picking/filtering the correct objects.
For example, if I want to retrieve an object's bullet.angleofmotion, I have to use "Compare Two Values". I cannot retrieve this from the normal list of conditions for the bullet behavior.
I've attached some examples showing the list of conditions for bullet and platform behavior when using "Compare To Values" VS. otherwise.