Rose wasn't a very good seer of light during her session. Is that what Kanaya meant when she said god tiers were meant to challenge players?

Kanaya mentions she thinks Titles may be meant to challenge Players, regarding the fact she has absolutely no idea what hers means or what to do, but people forget that the line following that is Karkat going like. “Nah, you’ll get it, you’ve merely just started, I know because I’m from the Future and you did Good.” They do challenge some Players, in the sense that they may be trying to repress their true Self, or perhaps because there’s a burden they bear relating to their Classpect- But the system leans towards positive growth.

Rose was actually a very good Seer of Light, her main goal was to gather every single bit of information and Lore on her Land about SBURB and their Session because she refused to accept everything was just arbitrarily doomed. She made a few mistakes, and was influenced into a more Active Role by the Horrorterrors and being a Derse Dreamer, but ultimately, she was still a potent Seer back there. In fact, she wrote the Guide that would later (or previously) guide the Troll Session to know what the hell they were doing.