According to Lord Kevin if you can express the things in number, half of the thing is already clear. So number is big explanation but further more competitive advantage could be relatively explained with the value of variable.

Numerical descriptive measures in business term deals with the collection, organization, analysis, interpretation and presentation of data. In applying statistics to a scientific, industrial, or social problem, you can interpret results more accurately.

Numbers are just indicative of a trend which may be studied for more competitiveness. Qualitative indicators have to be perceived by the researcher in the light of his question and enquiry to give revelations as answering his query.

Thanks everyone, I strongly appreciate your contributions.