Maybe our definition of gimmick is also different. Here are RG3S stats.
2012 he went 9-6 as a starter.
After that? 6-19. That to me is a definition of a gimmick QB who was figured out.
TT's stats. 2015- 8-6 record- 3025 passing yards, 20 TD, 6 INT
2016- 7-8 record- 3023 passing yards, 17 TD, 6 INT
2017-5-4 record- 10 TD, 3 INT (Not enough games to show yards but they are down of course)
Pretty consistent compared to having one great year, then completely falling off the wagon like RG3.