While the future is always uncertain, the past isn't. DF's recent guidance history, at least since I've been following them back in November 2010, has been very conservative. I emphasize very.
Rewind to about a year ago. At the 4Q 2011 DF CC, CEO Gregg Engles had this forecast for full year 2012 EPS:
"Weighing all of these factors, we expect adjusted diluted earnings per share growth of between 13% and 24% or adjusted diluted earnings of between $0.87 and $0.95 per share."
DF finished 2012 with an actual EPS of $1.40/share.
While the past is not always indicative of future results, its worth keeping in mind the conservative nature of DF's full year EPS forecasts.