I'd guess the 30mA are for the mere "WiFiOff-sleep-mode" but the "WakeOnPin-sleep-mode" should do better.
Not as little as deep sleep, but as @kennethlimcp has pointed out it should be < 1mA.
And with the Photon/P1/P0 things will get even better - and maybe sometime the WakeOnPin feature will find its way into the Core too, since the hardware would support it - this could/should be a known issue already, at least there was a thread about it, some time ago.