Agreeing with Lando-T over Lando-I, we already have two ground-immunes to click EQ beside anyway. Also, Mega Gardevoir does about the same in return to Mega Diancie after taking a Diamond Storm: 252+ SpA Pixilate Mega Gardevoir Hyper Voice vs. 0 HP / 0 SpD Mega Diancie: 172-204 (71.3 - 84.6%) -- guaranteed 2HKO and that also can't be redirected by Jirachi.
Echoing previous sentiments as well that we need roost on Zapdos - that allows it to be a more reliable check to the things it needs to check for the team, such as Sun and Talonflame. Also HP Ice still does respectable damage to Venusaur: 176+ SpA Zapdos Hidden Power Ice vs. 0 HP / 0 SpD Venusaur: 134-158 (44.5 - 52.4%) -- 17.2% chance to 2HKO - with Life Orb damage that's basically a 2HKO. I also use a slightly different Zapdos spread:
252 HP / 36 Def / 176 SpA / 28 SpD / 16 Spe with a Modest Nature (this is Kyle's spread from the EV compendium, it OHKOs Lando-T with HP Ice and Keldeo with TBolt, lives two Lando-T Rock Slides or a MDiancie Diamond Storm, outspeeds 240s, and dumps in SpD). I'd recommend a switch to this because it helps give our team a little more backbone and Zapdos doesn't need to outspeed Breloom if it has Goggles anyway.