It was instamined with AWS and Azure Cloudhosting mashines you can spin up within a few minutes after you cloned the first machine; Also you have no idea how the difficulty calculation (read -> ESTIMATION) works or you woulnd´t make such dumb arguments.
It's pretty simple, you just can't make the argument that there were hunderds of miners with the evidence currently provided. Different IP's doesn't necessarily mean different people and different bitcointalk accounts could simply be sockpuppets. However, you also can't make the assumption that Evan (and friends) were the only miners on aformentioned evidence. It's just a situation where it's kind of difficult to obtain the truth. Like othe said, someone checked the IP's that were provided and it were mainly AWS and Azure cloudhosting IPs.
You'll probably never know how many hashrate Evan (and friends) had, only if he honestly states it publicly (e.g. signing his addresses from back in the day).
@stan.distortion: I'll comment later on your comment, got to go now.