WI: Marinids & Nasrids win the Battle of Rio Salado?

Razgriz 2K9

Banned
The Marinids, under the Sultan Abu al-Hasan Ali ibn Othman invaded the Iberian Peninsula in 1333 in the defense of the Emir of Granada, Muhammad IV, (though a few sources, one of which may or may not be Wikipedia, say he sought to reverse the Christian gains of the Reconquista since the disastrous Battle of Las Navas de Tolosa in 1212.)

In any case, the Marinids and their Granadan Allies were defeated near Tarifa, whilst the Muslim forces were besieging it, this not only forced the Moroccans to retreat to Africa, but never again would a Muslim Army invade the Peninsula again.

But what if the Moroccans and Granadans were able to beat back the Castillian-Portuguese Alliance? What further gains would their be? Would it lead to a slightly longer (probably net gain of about 25-50 years max) Muslim-led presence on the Peninsula.
 
Alternatively, might it lead the Christians to prioritize going the other way and wiping Granada off the map? If it had acted as a staging point for a major and successful invasion, would the Christians decide to take action to prevent that from happening again, rather than more or less tolerating it for the next 150 years?
 
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