The seeding order is determined using an objective and transparent system to reflect more accurately an individual player’s grass court achievements

http://www.wimbledon.com/en_GB/news/articles/
2012-06-20/201206201340183388404.html

Pride themselves on using an objective formula (for men), have used it for over a decade, can't just throw it out of the window a week prior to Wimbledon because they like Rafa so much.