No, there's definitely a big difference in terms of value.
And yes, Crowder is not the best 3pt shooter in the world but 34% on 5 3PA per game, 36% on catch & shoot 3s, 40% when left wide open from three, & 42% from midrange is far from hopeless. The 40% is telling. When he has the time and doesn't rush, he's a good 3pt shooter (not to mention he shot 82% from the line which is usually a good indicator). Does he have room for improvement? Of course, but he's at least trending in the right direction.
Besides Crowder has Gay beat in almost everything else...
Crowder On/Off: +3.2
Gay On/Off: +1.3
Crowder RPM: 3.00
Gay RPM: 0.17
Crowder RAPM: 2.5
Gay RAPM: 0.4
Crowder TS%: 57%
Gay TS%: 54%