Lamar Jackson is several tiers above Jimmy G, who lead the 49ers to the Super Bowl, the same 49ers that went 5 years later with QB Brock Purdy. How lucky the poor 49ers were to have those elite QBs led those TEAMS to the super bowl. Thank goodness for Russell Wilson, or else the legion of boom never would have made it to the Super bowl!
There is a huge list of QB that "led" their team to the super bowl that Jackson is several tiers better than:
Cam Newton
Rex Grossman
Matt Hassellbeck
Jake Delhomme
Brad Johnson
Kerry Collins
Trent Dilfer
I could go on, but I'll stop. Your point is not as strong as you think it is. Quarterback greatness is not measured merely in wins and super bowls. Ask Dan Marino. Ask Archie Manning.
Sure it is a part of the conversation when you start ranking GOATs, but you are placing too much importance on team accomplishments for QB comparisons.