2010 was a solid class, but it was over ranked mainly because of the amount of players signed (31?). The average star ranking wasn't that special.
In 2010, Sark actually recruited 7 OL. The DL class was solid too, although Potatoe was a colossal bust. He was the #5 DT and almost a 5 star.
The problem is/was Sark fucked up OL recruiting in 2011 and 2012. After a year or two, a lot of in set players and high school coaches saw through Sark's bullshit. He also forgot about DB's somewhere along the way.
Sark pulled in some very good talent, but the balance was fucked and the bottom half of his classes were sloppily thrown together. The 2013 team, along with this year's team had elite talent in places, but were total dreckfests in othe areas because of his lazy and unbalanced recruiting.