Great comment. What you are saying is spot on. I had a 2009 17" Toshiba satellite dual-core I upgraded ~1.5 years ago to another Toshiba Satelite 17" with a quad-core haswell chip. Now my mom is looking to upgrade her aging 2010 Gateway 17" dual-core machine but for Intel's latest lineup, most i7 laptop CPUs are only dual-core and only a slight clock speed bump above the i5 models. I guess they felt quad-core mobile CPUs consume too much power for laptops but still, since they were able to do it a couple years ago, why have we taken a step backward?
She also is a happy owner of a non-retina iPad mini which is still chugging along.