First Fundamentally Weighted ETFs

Most Exchange Traded Funds (ETFs) are benchmarked to market cap-weighted indexes. In fact, most of my portfolio is comprised of these. Recently, a company called WisdomTree became the first family of Fundamentally weighted funds. The weights of each holding in these funds are not just determined by the market-cap of the company, but instead the fundamental values of each security. It will be interesting to see if the performance of these ETFs can negate the efficient-market theory