Mmmmm, not so sure about that. Basically all religions have some version of the Golden Rule, even the ancient ones. I really don't think Christianity was unique in this matter.
It may have been unique in its focus on the oppressed and downtrodden though. Prior to Constantine converting, Christianity was the religion of the persecuted. Of course, it then slowly became the persecutors.
Wut? Islamic forays into southern Europe (by this time, most of Iberia was already re-conquered by Christians) is what caused mostly French and English knights to invade Muslim land? That's absolutely laughable. The Crusades was an act of aggression by one imperialist group towards another imperialist group.
And I don't know what you mean by Judaism "coming out on top." Their numbers have always been far, far smaller than the other two, and the level of persecution they've experienced (especially from Christians) has been greater than anything the other two experienced. Doesn't sound like they're on top at all.
The reason the people from one branch of Judaism are unusually well-off is because they've had very different religious goals from the other two. Christianity and Islam have been proselytizing from the beginning. Their mission was always to convert as many people as possible and to win as many souls as possible for their god.
But Judaism is an ethno-religious group. They're not out trying to convince people that theirs is the true faith. They're the chosen people and that's it. They allow converts but the vast majority of its adherents get there through ancestry. So their numbers have always been far smaller and they've built up solidarity between themselves.
Ahhh, Christian victimhood and paranoia about Jews running the world. White nationalists are gonna white nationalist, I guess. Never change, Sketch.