Anne of Cleves is my favorite wife of Henry VIII.
I think that soon after her arrival in England, with her introduction to Henry, she realized very quickly that she was in a deadly game. She didn't speak English at first, but saw that she must learn it quickly and did.
She also did not want to return to Cleves to be shunned as a spinster or divorced woman, under the total control of her brother.
She was shrewd and calculating, having by necessity to stay one step ahead of Henry. She was quick-witted and she played the "beloved sister" role brilliantly.
She did end up well-respected by the court, her stepchildren, and even Henry, who eventually discussed politics with her.
She became wealthy, having her own estates, managed to keep her head, lived longer than Henry or any of the wives, and basically got to enjoy life somewhat.
So, yes, I think she ended up better off than, probably, anyone associated with Henry.