Hi Weezie!
I noticed the same thing myself! The logs for the baby blanket size are much bigger than I thought they'd be!
But my gauge is ok...and since the overall size of my blanket doesn't matter much, I'm ok.
I think gauge would be a definite issue if some had purchased all the yarn specifically for this blanket. You wouldn't want to come up short on yarn, nor have a lot of yarn left over.