Career Rushing Yards per Attempt:

• Rice: 4.6

• Foster: 4.7

Career Receiving Yards per Attempt:

• Rice: 8.9

• Foster: 10.3

Career Rushing Yards per game:

• Rice: 71.8

• Foster: 88.5

Career Receiving Yards per game:

• Rice: 36.6

• Foster: 37.5

• Career Touchdowns per game:

• Rice: .475

• Foster: .943

Longest Career Run:

• Rice: 70 yards (61 career games)

• Foster: 74 yards (35 career games)

Longest Career Reception:

• Rice: 63 yards (61 career games)

• Foster: 78 yards (35 career games)

Best Season Rushing Total:

• Rice: 1364 (2011)

• Foster: 1616 (2010)

Best Season Receiving Total:

• Rice: 704 (2011)

• Foster: 617 (2011 in 13 games)

Best Season Total Yards from Scrimmage:

• Rice: 2068 (2011)

• Foster: 2220 (2010)

Football Outsiders DYAR (Takes into account situation and opponent):

• Rice: 148 (2011), 115 (2010), 249 (2009), 25 (2008); DYAR/Year = 134.25
  
• Foster: 141 (2011), 377 (2010), 77 (2009); DYAR/Year = 198.3

2010 NFL's Top 100 Players:

• Rice: #56
• Foster #25 (As a rookie, basically)

All-Pro Teams:

• Rice 2009 & 2011 2nd team (50% of his career he's been all-pro)
  
• Foster 2010 1st team, 2011 2nd team (66% of his career he's been an all-pro)

Foster is better in almost every category and almost twice as good at scoring TDs.

Disclaimer: I don't actually think Arian is a better running back, all things considered. This was a response to several Ravens fans stating that there are no facts to show Arian is the better back.