Loop Capital analyst David Miller noted that OUTFRONT Media (OUT) reported Q1 revenues that missed expectations due to systemic weakness in its National book and pulled its annual AFFO guidance, also pointing to its National book as reason for the sluggishness. While OUTFRONT and Lamar Advertising (LAMR) are comps, they are also "very different" and the gap in valuation between the two is warranted, said Miller, who points to Lamar's pricing power, lead in digital and lack of exposure to the lower-margin Transportation category as reasons for its premium. Miller keeps a $25 price target and Hold rating on OUTFRONT shares.