I don’t think the sequence of registration matters so much as whether there is trademark infringement
I’m inclinded to disagree with this since the trademark in question is a business that is built on the net; and not a business that was brick and mortar which had the title long before the internet came along.
Personally I think the sequence of registration should ALWAYS matter. If its a business which is big and obviously successful enough to be able to claim trademark infringement then they’re big enough to pay up for the mistake of not having covered their bases at first opportunity (meaning they should have bought the damn domain when the .com’s first came out and they had the chance – *said with the right to exclude such situations where the trademank did not have the chance to buy their own name before some speculator came along and grabbed it) but that is certainly not the case with Sci Fi.