Sorcery and Reading Level

I know many of you have read both books: do you think _Sorcery and Cecelia_ is written at the same level of difficulty as _The Grand Tour_, or is it easier? Both are nominally YA, but some YA is for 9-year-olds, and some is for 14. I'm asking about how difficult the sentences and paragraphs are to understand, and the complexity of the plot. A book can edge towards the adult side of YA in how it deals with brutality or ethical complexity, but that's a very different thing.

( my particular concern )