iPads and e-readers were the key factors in holiday sales this year, comScore found on Monday. The computer hardware category jumped 25 percent compared to last year owed chiefly to Apple as well as a mix of e-paper devices like the Kindle and Nook; notebooks may also have played a role. Overstock of TVs hurt Best Buy but helped the consumer electronics category grow 22 percent by forcing price drops on LCD and plasma sets.