Toni,
The "comparisons" could be referring to three things:
1) Comparison amongst Shakeology itself, like the different flavors.
or
2) Comparison of Shakeology to other meal replacements / supplements.
or
3) Comparison of using Shakeology versus whole foods.
If I had to guess, I would say it's the second or third one. If this is the route you'd like to take on a post for your site maybe you can write something to where you "compare Shakeology to XYZ meal replacement powder" (comparing prices or ingredients), or you "compare Shakeology to buying popular organic health foods".
Better yet, Toni, why try to figure out which one it could be? How about simply write 3 different posts on these 3 different scenarios??