I’m a big history nerd so checked out a couple historical events I know well from reading everything under the sun about them.

Grokepedia is far better than Wikipedia far better for 3 of the 5 I checked. Just content wise it much richer, more descriptive.

In terms of accuracy, I would say 3 of the 5 were better in Grokedpia, with 2 of them being highly one-sided in Wikipedia (presumably from people camping on the Wikipedia article).