Sigh. The skipper would have - what - 3,500hrs+ to have earned his seat. Are you suggesting he has those hours and passed a command selection course whilst being unsure about basic FMC operation?
It is utterly pointless to speculate upon crew proficiency between airlines. All actual practicing airline crews I know of actively abstain from doing so. Unless you are CAA flight standards personnel I suggest you do the same.
Sitting on the jumpseat without informing the crew of your relevant flying experience is an odd thing for a professional pilot to do. Your posts on this thread are an even odder thing to do.
WWW