Dave Mazza looks at Boeing (BA) after better-than-expected earnings, but the outlook "is really so hard to forecast" in light of ongoing trade tensions with China. While Dave still thinks the investment community is skeptical on BA, he does call the aerospace giant a potential turnaround story. For Tesla (TSLA), Dave says the company's story is "really hard to disentangle from Elon Musk." He provides his outlook for the rest of the Mag 7 stocks ahead of earnings.