Fraternal or Identical?

Among the many (MANY) odd things random people will ask us about Harvick and Jarrett, is the question if they are Fraternal or Identical twins.  And, although they do look rather different, they are similar in many ways.  The other night I snapped this picture before getting changed into their jammies.  They had their pacifiers, and weren't willing to part with them, so I have grayed out the strings, as to not make it bias since they have their own colors.

What do you think, which one is which?!

Tell me what you think in the comments!