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In page Æthelstan:

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Historians disagree over the significance of the battle. Alex Woolf describes it as a "pyrrhic victory" for Æthelstan: the campaign seems to have ended in a stalemate, his power appears to have declined, and after he died Olaf acceded to the kingdom of Northumbria without resistance.[8] Alfred Smyth describes it as "the greatest battle in Anglo-Saxon history", but he also states that its consequences beyond Æthelstan's reign have been overstated.[9] In the view of Sarah Foot, on the other hand, it would be difficult to exaggerate the battle's importance: if the Anglo-Saxons had been defeated, their hegemony over the whole mainland of Britain would have disintegrated.[10]