superclown2, don't be silly. Seriously. Google cannot do them on a one to one basis even they wanted to rig the system.
It's possible and likely (IMO) that Google picked the advertising /brand signals and gave them credit.
I'm not saying this is a manual 'rigging' of the results. What I'm suggesting is that it's possible - just possible - that having used adsense in the past could count in favour of a site, as one of the myriad factors in the algo. It would make sense, throwaway spam domains aren't promoted with real money like that.