Magu-chan getting good ToC placement and plenty of colour pages so clearly it is doing well enough for Jump's standards.
Both ToC placements AND color pages are decided by editors. It literally means nothing. Especially a CP before the volume release.
If they want to push a series, they can and will.
You know, just like how they announced Build King was "popular" by chapter 2 or something. Or you know, like how they said Moriking was popular and gave it a CP before volume release.
At least, for Roboco, you can make the argument that the push was warranted since it did show growth VoV.
Magu has shown zero growth VoV. The actual data that we have has shown Magu is in fact, not popular and is already a stagnant franchise with zero growth.
If that's a new standard for WSJ, that's just incompetence.
How is Magu not a gag again... The same characters do the same shtick every week. Its a gag imo. We literally have no idea on behind the scenes, we don't know anything, its hard to guess.
You really don't need inside information to look at sales data that you get in Shoseki to estimate how something is doing.
How could we tell that Agravity or Moriking were failures? Did the magazine make announcements about them being failures after their respective volume releases?
How did some of us call S8 will get cancelled after seeing it's Vol 1 and 2 sales? A lot of the same defensive arguments were made for S8 as well. How did that pan out?
No, we looked at the data we have. Something the manga community has done for decades.