Yes, the main difference is that PoS doesn't waste a bunch of electricity in doing so. That is why government bureaucrats will force a change in a few years when more than $100 billion gets wasted.

(2018) You are a Chinese bureaucrat looking out your window at noon. On your desk is a staff regulation to prohibit SHA-256 and Scrypt ASIC manufacture, sale, installation and operation in China. The staff says that 5% of the coal-burning power plants under construction could be postponed if you sign the regulation . . .



credit: http://www.huffingtonpost.com/daniel-k-gardner/can-china-win-the-war-on-_b_5182132.html