I'm afraid that this is how the $1 million Salesforce hackathon will end up going to be. Given how 25% of the judging criteria is the "Use of Salesforce Platform".
I'm not aware of the event but if it is a Salesforce hackathon (i.e. they are running it) doesn't it make sense you get points for innovative use of their platform? If they are just a sponsor I can understand frustration.