I have read some material that suggested that index funds that use something other than a simple market cap weighting of stocks in the index should lead to higher growth. Wisdom Tree is a provider of such index EFTs. Their website shows a graph from Professor Jeremy Siegel comparing s&p500 index growth vs lowest P/E stocks from 1957-2011 where the lowest P/E quintile stocks have 4x the growth of the s&p500 index and this is very compelling.
However, when I look at their graph comparing the wisdom tree earnings 500 index (which I understand is their attempt to construct an index with a low P/E weighting) to the s&p500 index over 5 years from 2007 to 2012 the difference is only 2% (total, not per year) in favour of their index!
This suggests to me that in practice the theory is not leading to a significant growth advantage or that the implementation is not achieving what it should.
Has anyone looked into "fundamental" ETFs and seen strong evidence that some deliver significant enhanced growth.