Indeed, honesty bring people further than lies, even if Dash is weaker, covering up this fact with character attacks and bullying is not a good solution. They should be fixing that, even Dash can adopt the Monero technology if they wanted too, but instead they are stuck in this stubbornness.
I am not a miner but I believe XMR is only profitable with dedicated GPU mining. Most people I have seen all have their GPU mining rigs with the latest ATI videocards. I don't think you can outmatch them with a CPU.
But you should do your own calculations and see for yourself if it's profitable or not.