If you've already done all quests at least once and now you're repeating:


If you turn in each BG, 1 at a time:

• Warsong (50 rep)
  
• Arathi Basin (50 rep)
  
• Alterac Valley (100 rep)
  
• 1134 honor points (378 honor points for each)
  

If you turn in For Great Honor:

• Warsong (100 rep)
  
• Arathi Basin (100 rep)
  
• Alterac Valley (150 rep)
  
• 2388 honor points
  

For Great Honor's benefits:

• Warsong (+50 rep)
  
• Arathi Basin (+50 rep)
  
• Alterac Valley (+50 rep)
  
• +1245 honor points
  

XP:
"For Great Honor" gives 8300 XP (lvl 54) and 6600 XP (lvl 57 & 59)
I got 3200 XP from Warsong (lvl 54)
If all 3 give 3200 XP that's 9600 XP, which would mean turning them in individually may actually give 1300 XP more than "For Great Honor".

The title's not "For Great XP" :p