The both of the brands are known for its chocolate products and are famous for its taste. Both the brands have lots of likes on their Facebook pages.

Nestle has: - 8,080,949 people like this

Dove has: - 1,462,790 people like this

Nestle posts on Facebook 1-2 times a week and on the other hand Dove post once in a week and sometimes once in two weeks. Dove usually promote their new products on Facebook like they promoted Dove eggs etc. Nestle also follow the same strategy to promote their different products on Facebook. No both brands not use 50/50 rule in their posts. Both the brands use almost similar keywords like chocolate, milk, delicious, silky etc. Their posts are successful because they have large number of likes on them.

Dove: -   Most successful post on Facebook is this because this video has 946k view and 6.5k likes among all the viewers and this add is very attractive and unique from others and it has

https://www.facebook.com/dovechocolate/?fref=ts

Nestle:-most successful post about nestle on Facebook is this because it attracts our everyone who visit this page as well as this post has 3.6k likes And 1011 shares  

https://www.facebook.com/nestle.ca/timeline