At the end of the day most people aren't intested in the node their graphics adapter was built on or if it uses a few more watts than a similar one. They care about the up-front cost and fps. This isn't a home run for Intel, but it is a double. They got it out the door, it beats last gen on a smaller, more efficient die, and the drivers for the most part work. I am happy for Intel as they needed just something to go their way.
If they can get out 750/770 Battlemage parts in a timely manner that can compete with the next tier of cards up the stack they may have nudged their foot into the part open door of the graphics market. Funny thing here is that in the old paradigm, nVidia is Intel and nVidia could crush them out of the market by simply beating them on price as they have the pockets to "get rid of them" in that manner, as Intel used to frequenty do with their "up starty" competition.
Does Battlemage use a different driver from Alchemist?