Which database is the loser?

[protocol]

Filtered two of my databaes for 5/10 6max, and the stats looked similar, yet the BB/100 was vastly different.

Which stats would be causing this?


Database X:

Total AF including preflop: 2.47


Database Y:


Total AF including preflop: 2.51



Can you tell by these stats which set of stats were 1.63 BB/100 and which one was -0.11 BB/100? If not, what other stats do I need to look at?