"We could optimise our tyre-choise for this morning, but the feeling wasn't so good. Nevertheless we're still in the lead and that's the most important. The meteo is a bit uncertain for this afternoon, but whatever happens, we need to attack!" - Translated it.

Like Dimviii said, Loeb is driving WRC-tyres from Michelin. Keep in mind they are the "single thread" tyres, so no real slicks and no real rain tyres. The soft tyres are VERY soft (it needs to rain or be really cold/damp before you can use them), but still they don't drain the water like a proper rain tyre would. The difference is probably huge in conditions like they have now...

This video is a good example of what the drivers are facing on the stages.
https://www.youtube.com/watch?v=axCRjd_zfu4