The Judge's Report reveals in some detail why she came to the decision she did. The condensed version is relatively simple. She went into some detail quoting from the European Human Rights legislation and using examples from cases including one from the UK. Her argument basically came down to this, a balance had to be struck between Amaral's right to free speech and expression and those rights enjoyed by the McCanns to a good name and honour. She determined that Amaral had abused his position within the PJ and had illegally used information he gleamed whilst a serving police officer. The Judge also criticised his activities on retirement and stated that they were not conducive with his former status, she added that he had a responsibilities but failed to uphold them.
In respect of the sum awarded, I refer directly to an extract from the Judges Report...
There will therefore be proven to compensate the damage done within the parameters of paragraph 4 of article 496º of the Civil Code, those who are harmed by the defendant's conduct - the authors Gerald and Kate McCann. The criterion to be followed in determining the "quantum" of the compensation is equity, should be considered the degree of Lesante's fault, the seriousness of the offense and, because particularly relevant in this case, the value of benefits earned by one with the offense. The offense committed to the good name of the injured had very wide dissemination (paragraphs 27, 28, 30 and 47), having been the subject of intense media coverage both in Portugal and in the UK. It has been shown that as a result of the same Kate and Gerald McCann authors suffered personal injury that deserve the protection of law (paragraphs 81, 82 and 83). The same offense allowed the defendant earn the amount of about Euro 382,000.00 of income (paragraphs 33 and 62, and noted that the latter relates to the proceeds with the sale of the DVD so that it takes little strict, but or so it stops being materially true, because if the DVD was only sold at the end of April 2009, the process for their marketing began on March 7, 2008 with the contract concluded with the defendant VC Films, and this defendant the payment of Euros 40,000.00 documented on pages. 2095). In light of these vectors, it is deemed appropriate and proportionate compensation petitioned by those authors, which is Euro 250,000.00 (two hundred and fifty thousand euros) for each, to be added under paragraph 3 of article 805º code Civil, default interest at the statutory rate of civil interest, from the date of Gonçalo Amaral defendant's quote for action (January 5, 2010 -. fl 151) until full payment.
So there you have it, the Judge allowed the claim against Amaral on the basis of his thesis which contravened the McCanns rights under both National and European Law to a good name, the award of €500k was based on Amaral's illegal earnings from such conduct.