I still feel Scholar is presently the weakest healer overall, primarily because the sheer amount of damage from V4 makes White Mage wonderful. Once prog settles a bit, White Mage may be less dominate, though it's in a surprisingly good spot at the moment. All this being said, Scholar is far from weak, and can absolutely handle everything thrown its way. I know this sounds a bit cliche, however play whichever healer you're comfortable with. We've actually reached a point where one isn't noticeably lagging behind the other. You could even make a strong case for WHM/SCH, which was easiest the weakest comp before 4.05. I'd take a comfortable Scholar over an uncertain White Mage that switched any day.