Looking at the comparative statistics, Marvel's total unit sales are down 3.8% on October's, and DC's are down 8.6%. Everyone else's combined are down 3.8% and as per the article, the market overall is down 5.4%.
Of the total year to date unit sales, Marvel has a 38% market share, and DC is right behind them with 36.5%. This time last year, Marvel had 40% of the market, with DC at 35%, and for Jan to Nov 2010, Marvel had 44% of the market, with DC at 34%.
Still looking at total year to date unit sales, Marvel's unit sales have increased by 4%, DC's by 13%, and everyone else's combined by 21.5%. YTD sales for the market overall are up 11.5%. Looking at the 12 monthly sales (i.e. Dec to Nov '11 vs Dec to Nov '12) gives us roughly similar figures.