Apple and Facebook are having dramatically different impacts on the performance of the tech sector (AAPL, FB)

When it comes to the tech sector, two companies stand out in the crowd — Apple and Facebook.
Unsurprisingly, these two titans have a huge impact on the sector's earnings growth.
Apple is expected to be the largest detractor to the sector, while Facebook is expected to be the largest contributor, according to a blog post by FactSet Insight's John Butters on Tuesday. 
The current mean earnings per share (EPS) estimate for Apple for the calendar fourth quarter is $3.22, co