The best information that I can offer you in comparing the two areas is
1.Check the crime statistics at http://www.ci.dublin.ca.us/index.aspx
2. Check the sex offender database megans
Also contact a knowledgable agent whom can give you specifics on the neighborhoods.Price, size etc. I hope this helps.Feel free to call or email me for further assistance.
Real Estate Agent
Imara Mortgage and Realty