Complex sentence: Also this website uses specific numbers and factors in its implementation of the general ELO-System, other ELO rankings are of cause possible, thus there is not "the" Elo ranking for a national team.
Split into simpler sentences: Also this website uses specific numbers and factors in its implementation of the general ELO-System. Other ELO rankings are of course possible, thus there is not "the" Elo ranking for a national team.