My interpretation of the difference between strength and agility depends on a persons playstyle.
Strength users can go two different routes
-Swing as much as possible, blocking minimally
-Bide your time, wait for the perfect beheading swing
+Fewer stronger hits, takes more beating, better one-on-one
Agility users can
-Hit and run
-Make use of your speed to get around people, allowing you to land hits on their sides or even back
+More hits, lots of dodge, less focus on the individual, better in groups (in my opinion)
That being said, I'm working on a 21/15 even though I prefer the agility playstyle.
Also, MW Bec for sale.