Ill show you one of my old packs and what the numbers mean.
Sec 0247 Seconds At the below discharge
MAH2058 The MAH rating
AVG/V 1.27 Average cell voltage over the discharge
IR 24 Unsure.
MWHR 2319 Unsure.
CHG 4.0 The Amps the pack was charged at.
Disc 30.0 The Amps the pack was discharged at.
Cutoff 0.85V The voltage cutoff per cell for the pack.
What some manufacturers to show what look like better numbers will do is to use a lower Cutoff and/or discharge at a different value to increase the runtime of the pack etc. Try www.teamorion.com
they will probly have a FAQ.