In Oathbreaker, you lose access to a lot of easy fast mana, but your decks and life totals are also smaller, so I'm not sure how it equivalates. We assume faster, but aren't 100% sure. Also, from looking at lists both on Moxfield and this subreddit, I'm noticing that most decks appear to either fall into the Combo or Stax archetypes. More @Wikipedia
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