DF and other benchmarkers have done a very poor job benchmarking this game. I see them focus a lot on the first level which is a very brief 40 minute level while the second level is almost 10-15 hours of gameplay if you do all the open world quests. Ive explored only 40% of that world and i have 8 hours in the game.
There is an enemy base that is very detailed and has A LOT of enemies in that level that regularly dips below 40 fps. That should be the main benchmark level for this game. Running around the world on a chocobo should be another since that affects streaming and causes massive frame drops. These guys are covering the story dungeons which are very light on graphics, NPCs, enemies, etc. Of course they are locked at 30 fps.
I am not saying they should be running around large bodies of water trying to get the game to drop as much as they can, but traversal and doing open world missions in enemy camps should be what they are testing.