Nordic peoples converted to Christianity on their volition. Nobody forced Clovis to become a Christian. Missionary works created Christian enclaves as far upwards as Britain and Ireland, which paved the way for the Christianization of those countries later on, and then we have the Nromans, who converted to Christianity after having successfuly raided the Christian Franks.
Seriously, the way those pagan LARPers talk you'd think Christian armies marched into Northern Europe and converted everybody by force, but nothing like that ever happened. In fact, when the western Roman empire collapsed, the Papacy was left at the mercy of fate, literally, and had to rely on self-converted Northern barbarians for protection against tribes that hadn't converted yet, or had converted to heretic versions of Christianity, like Arianism.
The only time anything resembling anything like a forced conversion was when Charlemagne forced the Saxons to become Christian, but that had more to do with politics than religion. The Saxons kept raiding Frankish provinces, looting and burning villages and churches, and were threatening to make an alliance with the vikings to overthrow the entire Frankish empire. Charlemagne had to find means to pacify them or face the destruction of his own empire.
So in essence, ancient Nordic peoples abandoned their traditions in favor of this "Semitic" religion, mostly on their own volition. That tells you a lot of the state of those pagan religions back then. Imagine trying to resurrect something that was already corrupt back then after a thousand years of living under another religion.
