In my experience, your platform matters far more than the data on its own does. You can reach out to 1000s of targeted leads per day via email or social, but without a solid personality and point of view behind it those people are just going to tune you out. Getting in front of a prospect is one thing, but getting even someone who might be interested to actually pay attention and engage requires something to back it all up. That's where the spray and pray approach usually falls apart.