No. It's basically at a lower resolution than the BBC iPlayer High quality offering.
ITV hub is IPTV and nothing to do with Sky (unless you mean via your Sky box)
I have a You View HuaweI DNC360T supplied free from Talk Talk a few years ago, never used it until I left Sky about 12months ago as I cannot get the hub on my Sony tv and Humax box I gave it a try on the You View and found it very poor.The ITV Hub is currently in transition by switching from Flash to HTML5. I beta tested this new player on the YouView box and my feedback was highly complementary about the jump in picture quality.
What device are you using to view the player?