When you lay it out I don't think Ferrari can exclude any one issue to their current struggles. In Melbourne they lacked pace, even to a supposedly damaged Hamilton car. In Bahrain they had the pace but lacked reliability and cool heads under pressure. And then in China they again lacked pace. What makes it tough is that they seem to have the straight line speed that doesn't translate to race pace. It's almost like they can't seem to put the power down.
Does anyone know if Ferrari has been iterating their front wing design as much as Mercedes? Merc was on design number three in China, and they seem to be sticking with the polar opposite of Ferrari's design when it comes to the shape of the elements around the front tires.