Historically, spatial inequalities in Greece are considered to be limited, in comparison with the spatial inequalities of the rest EU countries. A basic analysis of some elements taken from the European Commission's annual statistic data reveals the real size of this phenomenon, which is proved tο be significantly less important than what is statistically depicted - the standard deviation of the Greek regional GDP per head in PPS is estimated to be, in real terms, bigger than what the first impression presents. According to some deeper analysis, the role of the Greek metropolitan region (Attiki) in calculating such a mediocre standard deviation index is critical, because of its comparatively limited development advance, comparing to the rest of the country (given its important population proportion). In the whole European example, a hypothesis of standardising the metropolitan regions' development advance leads to a corresponding standardisation of regional inequalities indexes, a fact that reveals the important statistical role of all European primary cities and proves the need for deep qualitave analysis of everything that is depicted in a quantitave form.