Conversions to Christianity: Vladimir vs. Constantine

Vladimir of Kiev and Constantine of the Roman Empire both converted to Christianity during their reigns.  The story of the two conversions to Christianity are rather similar.  Constantine was ruling over Rome when his wife became a Christian.  He converted to this religion to please his wife, but adopted some beliefs because he actually felt they were useful.  Vladimir became Christian due to a deal with Basil II of Byzantium.  Revolts in the Byzantine Empire caused Basil II to reach out to his enemy, Vladimir, because he needed assistance and had nowhere else to turn.  Vladimir in turn was married to a Byzantine princess.  He then converted to Christianity to keep an ally in Byzantium and also because of his new wife.  The rulers' conversions to Christianity are very similar.  They primarily became Christians because of political and social obligations, not necessarily personal desires.