Rafanoy can you doublecheck your calculations. According to some other forum Roger and Rafa are likely to be seeded 4 and 3 respectively (in which case they can meet only in finals).
With Rafa not playing Queens, his points are fixed for determining his seed now. Also, while Novak has indicated that he wants to play warmup before Wimbledon, he has decided not to play in Queens or Halle. He will play only in the week before at Eastbourne. But, the tourneys in the week before are not counted. Hence, his points are also fixed for seeding purposes. So, it should not be hard to figure out. But, I got to go now.