In reply to thepodge:
The Graphs page uses the grade type that the climb was given in the database, we don't have the facility of setting 2 grades for the same climb unfortunately. As 20 Foot Crack (S 4b) is set as Severe (Trad), it shows as Trad in the text at the top of the graphs page.
We'd need to re-design the way the grades are saved and linked to ascents from the ground-up to fix that one text bug. It'd be a lot of work and also, the grades are already pretty complicated, making them more complicated could very well slow down a lot of the other pages like the My Logbook, Crag and Climb pages.