Honestly, it depends on what you're coming from. If its the last gen mac book or a lot of cheaper PC notebooks, the new mac book's screen is an improvement. However, there is a noticable difference at any angle but straight on.
For me, I came from a HP pavillion dv1000 notebook and the new mac book blows it out of the water. I actually had to fire up the HP recently to get some files and it did not look good at all and that notebook has a glossy screen too.
So, short story long... compared to the new MBP, yes, its different. But on the scale of screens everywhere, its still better than most.