Dollar Tree (DLTR) sold off despite posting a double beat in earnings. Chris McMahon thinks the current stock price is a "sale" and sees significant upside over the next 6 months. That momentum is expected to come from boosted foot traffic and higher price tags. Nick Raich isn't as bullish, calling its weakened guidance over tariffs "an excuse" for Dollar Tree. He points out the company's past trends of lowered guidance.