I also found this to be the case this past week, only about 20% (1 in 5) of my games were against gowen, 50% were Falkow, 25% were Lawtia, and maybe 5% were Refess (I believe ran into a total for 2 refess players for the entire week). In the old days it was 45% gowen, 25% Falkow, 25% Lawtia, and 5% Refess.
(note: these figures are not based on hard data but my memory thus percentages are only rough estimates)
Big decks are tough for gowen in general, but big blue is nigh impossible for them to beat (atleast if the big blue deck is played well). The rise in the frequency of big blue has definitely lowered the number of gowen players who keep coming back for more. Are they gone, not at all, their still their, and still FAR more common (atleast in my experience) then refess, but right now it seems the popular decks are lawtia or falkow, and very few of the popular builds are gowen friendly.
The bunnies of Lavato have special abilities, like 'Action Skill: Make Carrot Disappear.'