U dont Lose control of you character when slowed or imobed. You can still use abilities you just have limited mobility. That isn't lose of control. Loss of control is when when you are stunned and you can not do any ability.
Being a mdps user - if you can't move that means you can't attack so in essence you can do nothing like being stunned. I like to think that all stuns used and the number times should count towards resolve, like how it used to be. Also, I would like to see any skill towards not being able to move count towards resolve as well.