Sorry, I'm tired. No, these are just for the individual comments. I confused the `vid` (the revision that holds the comments) with needing to determine whether or not a comment is for a particular field/value. We're not saving the entire content per comment, no.

1. A particular entity bundle can have multiple `text_with_summary` fields on the form.
2. A comment must store at least the following information for it to know the correct context to which it belongs:
  * entity, bundle, id, vid, field_name, field_value


Anytime a comment is added or removed (not edited), we update the `vid` of the entity with the whole value of the field. This contains the `<span data-cid="1234">text that was commented</span>` markup. When that's loaded, we load the comments from the database providing the above parameters to locate the comment.