I also did find this but I m not concerned about getting enough omega 3. I eat fish and also supplement with DHA. Trying concentrated DHA to help with studying/memory in school. Good to know on the flax though! Just not as potent in protien and other things.

Summary:
Chia Seed:

Contains the most fibre per serving
Contains calcium
Hemp Hearts:

Contains the most protein per serving
Contains (non-heme) iron and zinc
Canadian grown sources
Flax Seed (ground):

Contains the most Omega 3 (ALA) per serving. (Note: Fish is still a better source of Omega 3 because it contains EPA and DHA which have the heart health, brain function and more benefits. ALA converts to EPA and DHA but in small amounts.)
Canadian grown sources
- See more at: http://www.healthstandnutrition.com...hich-one-is-better/#sthash.vrspIEae.dpuf