Vertcoin is more mining profitable from other coins
This is true. But Ethereum mining is 10 times more profitable than even VTC at the moment. All my 64-bit rigs are switched to it at the moment. I'm mining VTC on the only one that is 32-bit.
Isn't Ethereum POS?
No, there's some rumor about them switching to PoS in the future, but for now pure PoW (besides ICO and premine).