Earnings season is here and several market leaders are clinging to recent gains stubbornly seemingly immune to recent selling in the broad market. Many are tempting buys ahead of earnings because of their fundamental and technical strength. Other former leaders are much cheaper than they were six months ago tempting investors to buy low and sell high ahead of earnings. It's tricky around earnings season though especially during a time when major averages are in downtrends. Market leaders can turn tail quickly if results aren't up to snuff. It'll takes great earnings -- not good earnings -- for growth ...