Here are the specs from my irons. My 6 iron is equivalent to their 5 in loft. My lie is steeper and length different. It may have to do with the shafts. If their shafts were heavier/thicker, they may have flexed less at impact and needed a flatter lie.
I’ve just watched the highlights from last night. It’s a good leaderboard for tonight, some of the big boys are looming. I was very impressed with Henley’s unflappability. His short game was very tidy. Louis or Rory FTW please