In reply to M. Edwards:
As sure your grading is about right. It's the Remy brothers' routes that seemed a little off-concensus back then (undergraded).
Had a quick peek at my old guidebook to check out how I could have missed these other Edwards' classics! They're somewhat in a different league in difficulty, with the descriptions having sufficient dissuasion from attracting lots of casual interest; Sandstorm - 'English E5 6b"; WotW - pitch 4 F7b.
Reckon they'll be much, much less well-travelled than Lionheart for that reason. They're also vying for attention with all those other excellent hard routes (Raid, Muezzin, anything by Precht-Haupolter, etc,): all promising Adventure with an 'A'...