Have you actually been keeping statistics over quite a few games to confirm that 30% win rate?
Because your win rate may seem higher than it actually is. Also results may be incorrect because you faced the same god multiple times and didn't take that into account.
Here's a write-up of a typical game vs Hermes
[100-200]
4 x quantum pillar, empathic bond, Hourglass, sundial
(Me) using pillars
(H) using 3 fire towers
[100-200]
empathic bond, hourglass, sundial, Qpillar
(Me) using pillar
(H) add 3 more burning towers
[100-200]
2 x Sundial, Hourglass, Empathic bond
(Me) Doing nothing. (Saving sundial until there's damage on table)
(H) Launching Fire Spectre (2|3)
[98-200]
Empathic bond, Hourglass, 2 x sundial, graveyard
(Me) put up hourglass
(H) ablaze fire spectre, put up another one
[92-200]
EB, 2 x Sundial, Graveyard, Qpillar, Otyugh
(Me) put up pillar, saving otyugh until quint arrives
(H) add towers, ablaze spectres
[82-200]
EB, 2 x Sundial, Graveyard, Otyugh, quint, sundial
(Me) Put up quinted otyugh, saving other cards
(H) triple Fire lance , burning tower
[32-200]
EB, 2 x sundial, graveyard, sundial, Rain of Fire, quint
(Me) Swallowing biggest spectre, put up graveyard, emphatic bond
(H) Destroys emphatic bond, hourglass, adds another fire lance
[13-200]
3 x sundial, Rain of Fire, quint, druid
(Me) swallow second spectre, Hermes has no creatures left
(H) Rage elixir kills my skeleton
[13-200]
3 x sundial, RoF, quint, druid, pillar
(Me) put up pillar
(H) fire lance. I loose.
Maybe I should have used the sundials sooner, saving more hp to endure the fire lances. Easy to say in retrospect, but he could have been hitting me with 3 crimson dragons the moment I ran out of sundials just as well.
[edit]
I've changed my play-style during the first few turns, from "trying not to get killed" to "try to draw as many cards as possible" and upgraded quite a few cards. Then I did another 100 battles and won 27 (24% if corrected to give all gods equal weight). Better than 17 but still not "at least 30%".