I just did Bahamut and my weapon got a Gentle rating and when I checked my zodiac glass it went from no sense (0) to faint sense (8) so the Gentle value has not been changed in 3.0 thus all values most likely remain the same. so I guess only all the zodiac rates up to the final stage was changed/made easier... speaking of which here are my zodiac dungeon drop rates:
before 3.0 patch
DD 1/6
HM Hard 1/7
WP 1/12
BF Hard 1/11
AV 1/5
post 3.0 patch
CM Hard 1/1
PS 1/4
AK 1/1
Tam Tara Hard 1/1
Lost City 1/3
Sastasha Hard 1/2
Halatali Hard 1/1
Snowcloak 1/1
Hulbreaker Isle 1/2
Stone Vigil Hard 1/2
Quarn hard 1/1