Only Pakistan and West Indies fans most probably will watch this series which is why it's relevant for those fans, but it's totally irrelevant for the rest of the world. Am expecting Pakistan to win this series.
West Indies could possibly defeat Pakistan on their turf just like Bangladesh sometime back, but the chances of that happening are quite slim.
West Indies is still decent in limited overs cricket, but in test format they have been horrible for quite some time. At least on this regard, I would rate Pakistan above West Indies. But then, Pakistan has been in horrible form recently. Their bowlers used to perform well, especially Shaheen Shah and Naseem Shah. But now, both of them have lost their form and this has really impacted their performance negatively. Also, they don't have the momentum. They lost both the test matches to South Africa quite badly.