Same concept applies. The academy is use to; and expecting; letters that are either "Rosie and Shiny" or "Very bland and neutral". That's just how people tend to write. What the academy is looking for with letters such as these is consistency and/or irregularities.
I.e. "Kevin is a dedicated individual who takes pride in doing the best job he can. He is always willing to help others on his team, in the classroom, and in the community..........." This is a very typical sort of meat and potatoes. It is skimmed over and not really looked at.
However; I.e. "Kevin is a dedicated individual who takes pride in doing the best job he can. His perfectionism in doing the best job is recognized by team mates when trying to accomplish common goals. And he prefers taking on the lead role......" This is CODE for, he doesn't play well with others. He prefers to work by himself. He doesn't like to take orders from other people.
These are just examples. 95% of all letter are of the "Rosie" nature. That say what a nice boy/girl they are. That they care so much for their friends, school, peers, and those in need. It's all pretty and happy. But every once in a while, you get one that just doesn't sound right. It doesn't sound bad, just different. You can take my 2nd scenario above, and depending on how you word it, it could be very good. What a natural born leader the person is. How they motivate others in a positive way. Or, it can sound like an arrogant loner who has a problem with authority and working as a team. So, if there's no inconsistencies in the letters, then there is very little importance on the letters. If there are code words and triggers, it could be very important. But these too are combined with the teachers and the ALO to determine consistency or if it's an individual writer and the way they are expressing. hope this helps. Mike.....