I am wondering why Simmons had not made a similar impact as Parsons. Is it more on the player or the Coach?
Simmons and Parsons are basically identical person measurement and athleticism wise (all data is from nflcombineresults.com):
6'3 5/8", 238 lbs, 33 3/8" arm, 9 5/8" hands, 4.39 40-yard, 2.58 20-yard, 1.55 10-yard, 39" vertical, 11'0" broad jump (Simmons) vs
6'3 1/8", 246 lbs, 31 1/2" arm, 11" hands, 4.36 40-yard, 2.58 20-yard, 1.59 10-yard, 34" vertical, 10'6" broad jump (Parsons).
Both won multiple awards for their performance in college. Simmons was put in a much bigger stage and has seen more adversities (4 straight years appearance in the NCAA national championship games and won two times).