I may have more later, but for now it should be noted that the bit score from a BLAST search and the informational number of bits used to identify design may be two rather different things. The usage adopted by gpuccio and most ID proponents is just a -log2 transformation of the ratio of functional to all possible sequences. I don’t believe the bit score from a BLAST search is the same thing.
If I am mistaken about this, a correction would be most welcome.