It's really unfair to compare Gardner to Trevor. Especially given the talent Trevor was given to work with in Denver vs what Gardner had in Jacksonville.
Siemian led a Broncos team with a Super Bowl caliber defense and the likes of BeBe Thomas, Emmanuel Sanders, CJ Anderson… and a very solid O-line to a 9-7 record during his best statistical year as a starter!
I agree Minshew had less to work with… but Minshew’s ceiling is at or below Siemian’s.
Do you really want to go into a season with Gardner Minshew as the starting QB?