Disagreed. The app has access to a much more granular device fingerprint containing carrier name, battery status, accelerometer/magnetometer data (I've seen at least one nasty company exfiltrate such data in their SDK), etc which can directly be correlated by data collected by the malicious Facebook SDK that contaminates pretty much every other mainstream app. In contrast, the mapping between browser fingerprint and device fingerprint isn't a 1-to-1 and is a bit more fuzzy.