Hi,
I've been tracking my sw pulls last few months, because i was worried that the real chances for 20 and 10 shards are lower than the game shows, and now i got to 500 pulls (50 x 10 pulls).
My results are:
10 shards drop rate is 2,6%
20 shards drop rate is 1,4%
5 shards cant be really tracked as we are getting them basically gueranteedly.
I would love to report this as a bug for further investigation.