Judging from the wikipedia link, Suite B does not contain a public key cypher. Which either tells us, that the NSA does not use asymmetric cyphers because they are broken. Or that they have a technical reason for it, like being able to do everything they want with key exchange, signature and symmetric cypher. So it is probably worth pointing out, that this speculations are interesting, but ultimately fruitless since we simply do not have enough information.
Yes, I should have read the wiki link. However my point was, that Suite B is so generic that we can not really speculate why the NSA did recommend this set of algos and not something else.
