The phrase "better comparison" refers to finding a more accurate or fair way of comparing two or more things. It involves considering different factors or aspects to make a more informed judgment. Full definition
Since the test situation is constant, it is possible to make better comparisons among children. (hoagiesgifted.org)
There is not good comparison to real print books. (goodereader.com)
For better comparisons between various studies as well as easier communication of model results, it is preferable to use a common set of scenarios across the scientific community. (link.springer.com)