Arcblock team just claimed that roughly 90k people passed the KYC process for public sale...well 90k people competing for 12500 ETH cap, it would be a bloody war on saturday 
I want to clarify the situation a bit. First, the manager of ArcBlock made a limited individual cap - 3 etherium. This is done precisely so that the others have a chance to get into the project. Secondly, in all popular projects that can give a big profit, a lot of competition. Some projects limit the maximum contribution to 0.1-0.2 eth, but I do not think it's serious. I fully support the ArcBlock project policy.
Yes, indeed, the organizers imposed a limit of 200,000 gas and 60 gwei (moreover, if they send more, they promise even 20% of the fine to give). But it only shows that the organizers want to give everyone an opportunity to try to get into the project and buy tokens. Chances will be the same for all and then everything will be decided only by your speed and luck! I believe that ArcBlock does everything right.