Reggie White comparison is more than a college total sack number comparison.
Reggie was unblockable one on one. Great motor and drive. Teams had to account for him on every play. And a great man off the field.
Derek is good but I don't see his unblockable side yet. Certainly not in college. Some games he just was not a factor. Derek has kept a pretty clean record off the field but even that does not compare to Reggie White.
Sorry. I may be seeing differently in 5 years but right now DB is but a shell of a Reggie White. Other than one number, it is a terribly one sided comparison.