i own both and i have them both because they both have there places.
for me the ar:
is accurate, easier to handle, totally modular to met any mission it needs to.
the ak,
tuff, reliable, accurate enough for the actual distances that most fire fights occur and beyond, can take harsher conditions.
btw nomad has got me turned on to going to tactical response after i get back from this deployment and i will definetly be taking an ak of some sort. either my mak-90, or an ak-74 which is the rout i want to go if i can fit it in the budget. it saves tons on ammo cost, and is perfect for that type of enviornment like he posted and witnessed!