When you expand the vanguard spoiler (PT mirror) you'll see entries like:
{1700,{defense->920,shield->620,absorb->160}}
The number on the left is you total of defense rating, shield rating & absorb rating (you total stat budget). then you have you defense rating, shield rating & absorb rating for that budget. So if your budget was 1700 for your gear level you should have around 920 defense rating, 620 shield rating & 160 absorb to get the most out of your gear.