No, I don't think that's more likely. Why would you?
The former is something we know could be built, with technology we already understand, for a huge payoff (in energy collection). The latter is magical unicorn-piss-and-fairy-dust idle speculation. A pure Bayesian reasoner would find the former more probable (evidence pushes its probability past 0.5). A frequentist would find no direct evidence for either, but prior proxies favoring the former.