Never read a whitepaper that so clearly targets a competitor before.
Its strange. If you have a good product you don't write pages about someone elses product.
Although i kinda agree with you i do understand why they put the comparison in the whitepaper. They know that they will get compared to Golem and iExec constantly, so why not put it right into the whitepaper?
I think there is a healthy competition here, where each project is trying to promote itself without dropping another...