[RussianBear]

How does Doyle recommend playing AK like AA-KK? He advises to open raise with it in EP but to open limp with AA-KK in order to reraise. He will always get his money in preflop with AA-KK if given the opportunity, such is not the case with AK. In MP, if someone had brought it in he'd just call with AK, whereas he'd raise with AA or KK.
In fact, in discussing how to play Ak on page 474 of Super System (page 585 in SSII) when there are three to a straight or flush, etc. "You might have noticed that this is quite different from the way I'd play two Aces or two Kings." I'll let you read on.