No you’re misinterpreting the information wrong.
Rise of the Tomb Raider sold 301K in its first week across both Xbox One and Xbox 360 in 2015.
When Rise of the Tomb Raider got ported to PS4 with the 20th anniversary edition in 2016 it sold 384K in its first week.
That number you’re quoting is a rough estimate of the PS4, XO, & 360 versions’ numbers being added together which is basically the same as Shadow of the Tomb Raider’s debut numbers now.
The article even makes mention of “However, it had a staggered released as it launched as a timed console exclusive on the Xbox One,” a statement that you conveniently didn’t quote even though it’s in the same paragraph.