that's the thing... you had him "meta" less then a month... but that doesn't apply to everyone...

but still she have counters... for a big portion of time the other 2 examples didn't had counters, the only thing that could counter 6p was unmissable intrerupts with more initiative which there was not many back then, the other one was ay bt but at that point he was like 40k+ cp and edo minato was to be released, kakuzu was worse cuz in CN there are a lot of bt/st and ninjas against kakuzu, we got what? one or 2 ninjas to "counter him" later (also keep in mind very VERY important, some time ago CONTROL worked a lot different, nowadays you can control with pos4 enemy's pos1.... )