The surveys are really tailored for workouts, not races or events. Looking at the extended survey info, you will see the a 5 All Out is a near failure that you barely survive. That may well be true and accurate for some, even many races.
Keep in mind, that since the 5 rating is near failure, TR gives the follow up survey to help understand why it was so hard. Again, normally applied with respect to the training plan and how to adapt it (if at all) to suit your needs.
I recommended to support a while back that in the follow up survey after rating a race all out, I think there should be an item to choose to indicate it was a race or competitive event so it can be separated from the other choices. I’ve chosen Intensity for them in the interim as was recommended to me at the time.