300M come from: Statutory damages for circumvention of a technological measure for 120,000 music files
22M come from: Statutory damages for willful copyright infringement for 148 sound recordings from Sony, Warner and UMG.
Why is it only 148 sound recording with infringed copyright when the 'circunvention' is for 120,000?
Different burden of proof. Why waste years trying to get server logs that may not exist when you can get a quick win? It's not about the money anyway. It's about the PR and whatever justification they can derive along the way.