Depends on your view, I think. To Henry "married six women to get a male heir for my beloved England", I think it the English throne might be worth more. During the similar marriage between Henry II and Eleanor of Aquitaine, their plan for their sons' inheritances were thus: "Henry II planned to divide his and Eleanor's territories among their three eldest surviving sons: Henry would become King of England and have control of Anjou, Maine, and Normandy; Richard would inherit Aquitaine and Poitiers from his mother; and Geoffrey would become Duke of Brittany through marriage with Constance, heir presumptive of Conan IV."But wasn't Spanish throne at the time worth much more than English one?
Aquitaine was not Spain, I acknowledge, but it was still a fairly big deal.