scaling in load runner analysis

Hi guys,
here i am analyzing the Load runner analysis report,for example to find bottleneck is with system or application , i am comparing the values of [B]available bytes [/B]and [B]committed bytes in use.[/B]

here while comparing whether we have to set the scaling factor for counters to same values like, for example if [B]available bytes as scale set as 1[/B] then we have to set [B]committed bytes in use as scale as 1[/B] or no need to worry about scaling factor.

basically..we generally do not scale in LT...