Cardinality is a quality in the Michael Teachings Overleaves framework that denotes either a one-to-many focus or a general outward direction.  A cardinal energy has an impact on all the people around; it is magnetizing.

For instance, in the Role, a King is focused on directing and motivating a group of people (the "kingdom"). This does not mean that they will never have individual relationships or help people one to one, but they will be called to be in that position to manifest who they are.

In the Goal, Dominance has one desiring to be "on top" of what is going around you. This tends to mean an outward focus in order to truly be a master of one's surroundings, but it can also appear inward focused to an observer. The energy in such a case, however, will still be outward and Cardinal.

There is nothing "better" about the  Ordinal or Cardinal energies; each serves its own purpose.  The vast majority of people have a mix of both energies in some manner.