Malcolm Thomas is higher than Burke (I know, small sample size). But there are a lot of other more clutch players (even Kendall Marshall according to that list). And if you change the differential to one point, Burks is higher than Burke. I'd prefer to have Exum in the clutch for his creating ability. How many times did Burke make an amazing pass in the clutch? Seems like he likes to try to be the hero. I want a PG who makes his teammates better and makes the plays that win.
Edit: While he made some clutch shots, I generally did not like the shots he was taking.