Just a day after introducing the iPad mini, a revised iMac, a 4th-generation iPad and a retooled Mac mini, the company is outing its Q4 2012 earnings -- and it looks as if it has narrowly edged Wall Street estimates. Revenue was pegged at $36 billion (compared to estimates of $35.08 billion), with net profit at $8.2 billion. For the sake of comparison, the outfit's