A)Agreeing to all of the answers,no doubt University will cover in depth, also if you are surfing to become a Dietician also refer becoming a RD, with your current credential it will be great booster.
B) As for me having multiple credential from top notch organizations and BS,
with 20 years global experience, with Olympics/paralympics etc.. and general clients without any medical restriction. The top notch certification get your clients & athletes the results easily combined with proper periodizing & rest .
C) However if you planning on special groups, (Kids, Pregnant, people with medical conditions etc) best is university enhanced with chekout eatright.org
Hope it helps