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Issue description

In chapter 6 Section 2 two sets of perf data are compared. The task is to analyze both data files to determine differences that would indicate which of the programs is running most efficiently.

Then after showing the commands for perf report, Step 3.6 says "After comparing the event listings, you will discover that program1 is the more efficient running progtram of the two".

The instructor in the video just parrots this statement without any other details.

Learners are  not sure on what basis (what exact numbers are being compared and how) this conclusion is made. it is little confusing and a difficult topic for learners .

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