And Artic Silver also suggests you spread out the paste as shown by BruceG87. Experiences from a whole slew of builders and overclockers has shown that paste spreading should only be relegated to the most careful and skillful of users.
Couldn't it be that Arctic Silver is correct about using a small amount during their tests where they have highly skilled paste appliers and high pressure from the heatsink face? And maybe they're using a heatsink with a flat face instead of the convex face found on the Zalman CNPS 9900.
By the way, Arctic Silver recommends the line method for their product.
How about you just try out several different methods and actually troubleshoot your problems before crying about AS5 on forums like its proof of the second coming after a single application attempt?