The tablet category is continuing to eat the PC’s lunch, albeit it’s a large lunch so the feast is taking a while. Analyst Gartner expects worldwide tablet shipments to grow 53.4% this year, with shipments reaching 184 million units. And while traditional PCs are still shipping a lot more units (303,100 forecast for this year), those shipments are continuing to decline – predicted to be down 11.2% on 2012 shipments.