Whether you think Suyeon is a better all-rounder than her cell mates Yaning and Shana is completely a matter of personal preference. When someone like Guinn Myah is possibly in and Hikaru and SXT are out, it is much harder to claim this is about skills.
From the original top ten according to the Masters from each group, 4 C-team, 4 J-team, and 5 K-team are still in the running. That seems pretty balanced actually. Plenty of top 10 C and J trainees barely got attention and screen time and are gone now.