Somebody please riddle me this…

I’m looking at going to LAX350B after MLOA and I’ve been perusing iCrew. I’ve noticed something for several months and it doesn’t add up in my mind.

Every month the reserve coverage is in the blue…by a lot, on most days. However, there are SYD trips in open time nearly every day, usually more than one and tons of unassigned trips in the wide report. I know the category can’t be that overmanned. What gives?