Hi two more examples are
-Moov screwed Iodex by saying that it does not make clothes black in color like Iodex does.
-Anchor took on Colgate by promoting the vegetarian toothpaste.
Brands probably breakout when
-they have a new ad campaign
-the product becomes a part of everyday language like xerox for photocopy etc
A good framework is to read the tipping point book by Malcolm Gladwell I guess.