A rare breakdown of tablet market share by IHS iSuppli has shown that the Kindle Fire may be doing more damage to other Android manufacturers than to Apple. Amazon was estimated to have shipped 3.9 million units in the fall, or enough to get it 14 percent of the market. While this dropped the iPad's 15.4 million units from 64 percent share to 57, other Android supporters lost over a quarter of their own share.