You don't think that the NSA has 'Einstein-level' cryptologists and mathematicians? They're fooling themselves.
PGP was the best military grade encryption available to the average consumer. I'm sure the NSA can probably break that by brute force or other methods. Anything built by man can be undone by men.
Yes, they have the best - they can afford them.
PGP encrypted email is easily identified therefore for sure will get intense examination and logging from the NSA or whoever regardless of whether or not they decide to invest the resources to crack the message.