The Big Mac and the 11 appeared at the same time from McDonalds.  The two new burgers, the Big Mac was larger than life, and the 11 was shy and humble.  The Big Mac was 34 years old, and the Eleven, a mere 17.  The Big Mac was insatiable, the Eleven never gave in to their demands, and remained obstinate. 

The Eleven was a slow seller, and was gradually, and then largely forgotten.  The Big Mac grew in fame but not actual size.