University of California, Davis is a first-tier tertiary institution in the US. It is one of the most popular campuses in the University of California system. US News ranking: National Universities, 47. Admission selectivity: more selective.
San Jose State University is possibly a second-tier (or lower) institution. It is one of the campuses in the California State University system. US News ranking: Universities - Master's (West), 41. Admission selectivity: less selective.
Hence, in terms of scale, funding, prestige, popularity, and competitiveness, UC Davis is a lot more superior than SJSU.
As for nutrition major, US News lists the following colleges in California among "American Best Colleges 2007":
California State Polytechnic University - Pomona
California State University - Los Angeles
Pepperdine University
Point Loma Nazarene University
San Diego State University
San Francisco State University
University of California - Davis
All in all, UC Davis is a much better choice than SJSU to study for Nutrition.
Ref:
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http://www.usnews.com/usnews/edu/college/directory/brief/drglance_1313_brief.php [Accessed April 11, 2007]
http://www.usnews.com/usnews/edu/college/directory/brief/drglance_1155_brief.php [Accessed April 11, 2007]
http://www.usnews.com/usnews/edu/college/tools/search.php# [Accessed April 11, 2007]