Wall Street ALWAYS over-estimates earnings and by about 33% on average. That overestimation provides a significant amount of headroom for Wall Street to be disappointed by year end, particularly once you factor in the “effective” tax rate that most companies actually pay.
But even if we give Wall Street the benefit of the doubt and assume their predictions will be correct for the first time in human history, stock prices have already priced in twice the rate of EPS growth.