The similarities don't end there. In Stafford's 7th season, when he was 27, Lions offensive coordinator Joe Lombardi is fired and Jim Bob Cooter is elevated to offensive coordinator. Stafford's QB rating improves from 86 under Lombardi to 105. His elevated play continues into the next season and beyond.
In Goff's 6th season, when he was 27, Anthony Lynn is fired for all intents and purposes. Ben Johnson is de facto coordinator with Campbell calling plays. Goff's play greatly improves and that improvement continues in the next season. It remains to be seen whether Goff continues to play at this level like Stafford did, but the similarities are too remarkable to ignore.