In terms of engagement, the campaign was number one in Europe in May, recording a 2.2 per cent click through rate, facebook said.
Created by CheezeDMG, Facebook said it had one of UK's highest engagement rates with fan numbers jumping by 3500 in the first four days.
Targeting males over 18 years and using rugby keywords, the engagement ads aimed to drive sign-ups to the Canterbury of New Zealand fan page with a 20 per cent merchandise discount offer.
Newly signed up fans were also asked to vote for where they think the Rugby World Cup 2015 should take place.
The fan page offers a new competition each month, designed to increase engagement and keep user's profile pages up to date with Canterbruy content.
Facebook did not reveal how other brands performed.
According to ComScore, Facebook was the top online display ad publisher in the UK in April, with 12.5 billion ad views, compared to Microsoft's 3.8 billion ad views.
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