Since the Cowboys last won a Super Bowl, here are the winning QBs:
Favre
Elway
Elway
Warner
Dilfer (but all-time defense)
Brady
Brad Johnson
Brady
Brady
Roethlisberger
Manning
Manning (Eli)
Roethlisberger
Brees (at his best Romo was about on this level)
Rodgers
Manning (Eli)
Flacco
Wilson
Brady
Manning
Brady
Wentz/Foles (I count both because Foles would never have gotten that team to that playoff seeding)
Brady
Mahomes
Brady
Stafford (Romo was at this level at his best)
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I’d say 18 of those winners are Hall of Famers or future Hall of Famers (Favre, Elway, Warner, Brady, Manning, Roethlisberger, Brees, Rodgers, Mahomes).
Two others were All-Pro level QB performances for that season or a run of seasons - Wilson in Seattle, Stafford in LA.
Two wins were from the football gods mistaking Eli for Peyton and gifting him two trophies for some reason.
Only four wins - Dilfer, Brad Johnson, Flacco and Foles/Wentz won with less than elite QB play. And Wentz was elite that one year to get Foles into position for that postseason run. And maybe not ironically two of these wins came with the same well-run franchise - the Ravens.
Leaving you with basically one example - the 2003 Buccaneers - as a team without an elite non Manning QB who managed to put together a winner.
You can argue Dak is an Eli Manning equivalent perhaps. Romo certainly was even Manning’s superior in my book.
But the odds aren’t great. You are competing with like 25 other teams to divide up 4 wins out of 26. Of course we haven’t won in that time period then.
You need an elite QB. If the Joneses were smart they’d say to hell with convention. To hell with not drafting a QB high while you have a starter.
They would focus every last energy on drafting an elite QB.