I can't speak for the other reopen-voters, but here's why I felt confident enough to cast the fourth and final VTRO.
The question seems to be asking how much power a particular device used to perform a particular feat, in-universe. We might need to use some real-world physics in order to compute the answer, but it's not a "was this feasible?" type question. It seems on par with e.g. Which is bigger - the Star Forge, or the Death Star? or How strong would Clark have to be to lift the school bus out of the water? - it's asking for a realistic physical analysis of a fictional object.
Quoting from the standing policy on science questions:
In-Universe Explanations -- Even Based On Real Science -- Are On-Topic
Any question that is asking for an answer within the context of a fictional universe, even if that question requires real-world science information, is on-topic.
In order to make the question (hopefully) more clearly on-topic, I edited "would" to "did" in the question body (which I believe preserves the original intent of the OP) and also edited in an extra paragraph taken from one of the OP's comments, to further clarify his intent.
You make a good point about this particular question actually being mentioned in the policy on science questions. However, one poorly chosen example doesn't invalidate the intent
of the policy, which is still as in the quoted header and paragraph above. Perhaps that post could be edited to provide some more clear-cut examples of on-topic and off-topic science-related questions.