I assume you're talking about domestically? I'd have to see the Deadline article in question. Internationally, the film has been mixed. There are some markets like Mexico and France that have demonstrated resilience. But important markets like the United Kingdom, Germany, Spain, Brazil, South Korea, and China all look like they're behind their predecessor.
The following are the unadjusted grosses for Apes 8 vs. Apes 9 in selected markets for the 3rd week of its run in millions:
United Kingdom: $20.7 vs. $13.3
France: $17.9 vs. $17.4
Germany: $8 vs. $5.1
Mexico: $14.7 vs. $15.6
Brazil: $11.6 vs. $7.7
Spain: $7.7 vs. $5.6
China: $107 vs. $25.5
South Korea: $11.3 vs. $6.4
Russia/CIS $10.6 vs. $2.8*
I've bolded the only major market that is currently outpacing its predecessor. Lest I be accused of cherry picking, I selected the international markets based on them surpassing the $10 million mark during Apes 8.
There are a few bright spots in smaller international markets. For example:
Colombia: $2.3 vs. $3.7
But for every Colombia, there is a Taiwan:
Taiwan: $4.6 vs. $2.5
While $400 million is possible, I wouldn't treat it as a forgone conclusion. In fact, it's looking less likely right now.
*Included only for completeness.
EDIT: I incorrectly assumed Russia/CIS did not have release. This was my mistake. While Disney stopped releasing films in Russia, the other countries of the CIS still have releases. I've updated the Russia/CIS numbers accordingly. Obviously, that particular comparison is comparing apples to oranges. The other data is useful for comparison though.