Here is the metagame breakdown for the May edition of the MTGO Power 9 Challenge:
5-2 or better:
- Collector - Dredge
- Call1Me1Dragon - White Eldrazi
- Montolio - Eldrazi Shops
- Pubert - Grixis Pyromancer
- Mr. Random - White Eldrazi
- BlackLotusT1 - White Eldrazi
- Lexor19 - White Eldrazi
- JdPhoenix - Blue Moon
- Diophan - Jeskai Mentor
- IcyManipulat0r - UW Mentor with Delver
- Ravager101 - DPS
- Footemanchu - DPS
- Deibler - Jeskai Mentor
- Sigaisen - Dark Sylvan Mentor
Metagame Breakdown and Win Percentages:
Note: Mirror matches were not included for overall win %.
Archetype vs Archetype Win Percentages and Sample Sizes (n = number of wins - for instance, Gush decks went 5-0 against Oath)
Subarchetypes as promised:
As always, a major thank you to @diophan , Ryan Eberhart , for his help with this (and condolences on the 9th place finish).
Edit 1: Top 16 decklists linked to above.
Edit 2: Updated the original post with Subarchetypes. We considered IcyManipulat0r's deck to be a "mentor" deck instead of Delver as it had a more expansive manabase (with Sol Ring and Mana Crypt) along with Mana Drains. Obviously, this helps emphasize that classifications are gray rather than black and white and there is no perfect system.
Edit 3: There was a rather odd bug in or google doc that affected a handful of matches in round 4 (for some inexplicable reason, the fill function skipped cell 43 and caused a misalignment of opponents to archetypes for 10 match results or so). This slightly affected the calculated win% against the field and we have updated the initial table.