Everyone is drooling over cold calling on LinkedIn

All the LinkedIn influencers are obsessed with it. I think it works, depending on the industry. But their point is always that it drives the most meetings more than any other channel. I concede that. However, does it drive the most closed won opportunities per capita? Is the win rate higher or lower for meetings from cold calls vs other channels? Meetings are great but sales is about money in the door. What are you guys seeing out there?

Edit: I mean cold calling is being discussed as the main channel on LinkedIn by LinkedIn influencers - not that people are using LinkedIn to make cold calls. Capisci?

Edit 2: I'm really interested in close rate. Some people keep getting fixated on effectiveness for booking meetings. Booked meetings does not equate to closed won deals.