A protein treatment is only as good as your level of protein need. Therefore, the 2 min isn't better or worst than the intensive stinky one. They are just different.
Now the intensive treatment is designed to give more protein than the 2min. That is why its heaven if you have severly damaged hair and hell when you don't really need strong protein.
If you are happy with how your hair responds to the 2 minute in the way that you are using it now then leave it be.