FWIW the Japanese translation of the title is

新型コロナの起源、研究所から流出の可能性高い＝米エネルギー省

To retranslate back to English as a relatively direct translation

The cause of COVID, there is a high possibility it spread from a lab.

Notably missing are something like 一番, to mean most. This title is in absolute terms. The reason I found this in the first place was because a Japanese colleague was surprised that it did come from a lab! after an initial moment of doubt before accepting it because WSJ is reputable.

I sent the news deck an email pointing it out but do expect it's intentional. Reading as absolute rather than relative is likely "correct" and a great example of misinformation from the WSJ. Presumably reputable news sources just don't exist anymore, or perhaps they never did :(