Drag Radials vs Slicks

With my car times are the same. Car weighs 3550 with me in it, 373 rear, 3500 stall.
MT drag radial 295/55/15. Best 60ft 1.50 et 10.97
Drag slick 28/10.5/15 best 60ft 1.53 et 10.98
DR is inch shorter than slick, probably why slightly better 60ft and et. DS will run that all day long, DR not so much. DR work great when they work I just find them inconsistent in my experience.