Ben ran a 4.75 at the combine. That's about where Rodgers, Wilson, Mahomes, etc. timed. He was not a "statue" QB until he got old.
Since the early/mid-80s, when I think most people accept the modern passing game developed, the 10 best QBs (retired) have been:
Marino
Manning
Montana
Elway
Brees
Roethlisberger
Aikman
Young
Favre
Kelly
Most of them ran between a 4.6 and 4.8 (+/- 0.5 sec).
There have always been attempts to establish "dual-threat" or "scrambling" QBs. Most don't work out that well in the pro game. Some become average or above average. Randall Cunningham was probably the best of them.
It's not much different today. The vast majority of the elite QBs run in the same range, with a couple outliers:
Brady 5.17(u)
Garrapolo 4.97
Winston 4.97
Cousins 4.93
Ryan 4.89
Goff 4.82
Daniel Jones 4.81
Stafford 4.8
Mahomes 4.8
Wentz 4.77
Rodgers: 4.7
Lawrence 4.7(u)
Carr 4.69
Herbert 4.68
Mac Jones 4.68
Burrow 4.67
Watson 4.67
Trubisky 4.67
Tannehill 4.65
Jalen Hurts 4.6
Prescott 4.56
Wilson 4.55
Lance 4.5(u)
Allen 4.45
Fields 4.44
Tua 4.41
Murray 4.38
Jackson 4.34