Miami had a better winning percentage against the west then they had against the East, also that percentage was as good or better then anyone in the West had against the East. Of course normally you're correct so maybe take winning percentages against both conferences ,give them each a weight of one and add or average so a weak conference won't give a superteam in it an advantage. Of course then you might have to do the same so on divisions.
<blockquote class="twitter-tweet"><p>David Stern says NBA Board of Governors unanimously approve a 2-2-1-1-1 Finals with extra day off between Game 6 & 7. 2-3-2 previously.</p>— Marc J. Spears (@SpearsNBAYahoo) <a href="https://twitter.com/SpearsNBAYahoo/statuses/393072450432290816">October 23, 2013</a></blockquote> <script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>