The point of the team was to ensure dominance over the rain dance teams. Crobat as a lead will nail Ludicolo leads (immune to Fake Out, Brave Bird is a OHKO, U-turn is a 2HKO and switches in something it can't hurt), while Abomasnow is there to set up Hail, which can be reset if you choose by U-turn on Crobat and a switch by Abomasnow if need be. Wood Hammer is a OHKO on Kyogre, it resists Kyogre's most common moveset of Water Spout/Surf/Thunder/Protect and will win in a fight. Any of the other pokemon can be used, but use whatever you like.
The idea of OHKO teams is that no matter what you are against, if you set up a sub on one of your two mons safely, you have a very good chance of killing any threat regardless of their speed or boosts.
Micle Berry provides a one-time use OHKO for free, if you want to use it repeatedly you may use Snorlax with Recycle/Fissure/Return/Crunch or another similar set on a different pokemon.
I am just throwing out the idea, the team was just something I threw together on the spot, but I am suggesting the use of evasion and OHKO might work.