I'm sorry, was my message unclear? There were no assumptions.
I'm speaking from experience that when I was using Debian testing I would usually receive security updates days after they are available for Debian stable.
Obviously security updates for stable do not go through normal release cycle.
I wasn't commenting stable security updates, but lack of timely access to security updates on testing.
Now you are making way to many assumptions with this phrase.
Do you really think that make sense to have critical security updates for stable having to pass through the normal release cycle? :)