Quote from Scataphagos:
If Brent is thicker and harder to refine, why does it cost more that WTIC?
Geopolitics, delivery rack space, and barge rates are big with that spread: to wit, 90% of Libyan Oil goes to Europe.
Both WTI and Brent have terrible delivery mechanisms, they are defacto financial contracts with barely functional physical delivery aspects - arbing or spreading between the two strictly on delivery fundamentals is a death sentence.