You'd use that one liner as a failed debrief?
Even if you expanded it to make it longer it says absolutely nothing about why the mission failed (not even if the ship you were escorting was destroyed or not!). A good failure debrief should be more than "You failed, try again" It should go into depth on why you failed, which ships were destroyed, what you could have done better.
From what you're saying above it appears that you're sacrificing well thought out, high quality debriefs in order to save yourself from the effort of making a couple more debriefing stages.
I find it ironic that Goober started this thread because he felt that people were producing inferior briefings in a desire to save themselves work and the only person still arguing with me about anything similar to the idea is producing briefings inferior to even the standard FS2 AWOL
and failure messages as a result.
Oh and check you PMs while you're at it.