Hameed had a pretty average season compared to all the other CC openers tbf. Like, he didn't stand out statistically at all; 50+ averaging openers was pretty standard this year.
From the Highest Averages list, 20 innings minimum, Div 1 in bold, includes Lions games etc:
Cook: 1278 @ 75.17 (but does include Tests)
Bell-Drummond: 953 @ 68.07
Jennings: 1602 @ 64.08
Gubbins: 1409 @ 61.26
Duckett: 1338 @ 58.17
Nash: 1256 @ 54.60
Trescothick: 1353 @ 52.03
Browne: 1262 @ 50.48
Hameed: 1198 @ 49.91
Dent: 1336 @ 47.71
Stoneman: 1317 @ 47.03
---
Robson: 899 @ 44.95
Burns: 1248 @ 41.60
Lyth: 1133 @ 40.46
Lees: 1199 @ 39.96
Mitchell: 1069 @ 39.59
Mullaney: 1148 @ 39.58
Dickson: 701 @ 38.94
Godleman: 934 @ 38.91
Meanwhile you also had plenty of guys who have opened in the past stacking up runs: Northeast (1402 @ 82.47), Madsen (1292 @ 58.72), Westley (1435 @ 57.40), Petersen (1134 @ 49.30), Cosgrove (1279 @ 49.19); Trott (1051 @ 45.69), Rogers (1010 @ 43.91), Wells (955 @ 43.40) and Denly (733 @ 38.57). And Cosgrove was coming off an Australian summer averaging mid-20s.
This was a very, very good year to be an opening/top order batsman in the County Championship.