Not much to the first.http://etfdb.com/mutualfund/DISVX/
I suppose EM Index at VG may be a reasonable comparison to the second but performance lags by 3% a year for the last 5 years. I believe the core fund contains a lot more small and value stocks, thus the higher risk/return profile, aside from the other stuff DFA does.
VG compares very well when it comes to bonds and large caps, but if you're looking to REALLY slice and dice, DFA has better options, perhaps even enough to justify a low-cost advisor, as long as you place some value on the other stuff an advisor does other than provide access to DFA funds.
1) Invest you must 2) Time is your friend 3) Impulse is your enemy | 4) Basic arithmetic works 5) Stick to simplicity 6) Stay the course