Justin Herbert holds a 28.1% edge in Superflex dynasty value.Updated 9/21/2026
Mendoza is 5.6 years younger, so if he hits you’re buying multiple prime seasons at a steep discount versus Herbert. At a 30.7% value gap, he’s the kind of QB2/3 bet that can let you allocate capital elsewhere while still giving you a path to a long-term starter. If you believe in his development/starting-security in LV, the asymmetric upside comes from his price being closer to “uncertain starter” than “locked-in QB1.”
Herbert is the archetype of a dynasty QB cornerstone: proven high-end NFL starter with year-to-year job security and multi-year longevity. His week-to-week floor in Superflex is what contending rosters pay for, and he’s much less sensitive to organizational/role volatility than a young, unproven option. The 30.7% premium is largely “certainty tax,” and at QB that certainty is often worth it.
Take Justin Herbert—bankable Superflex QB1/2 production and stability matter more than the age/value discount.
Lean Fernando Mendoza if you need to diversify assets and chase appreciation, but only if you’re comfortable with the risk he never becomes a long-term starter.
Not close in certainty—Herbert is the better dynasty asset, while Mendoza is a speculative value play if you’re intentionally taking on QB risk.
Worth more?
Justin Herbert is worth more by a clear tier given his locked-in NFL profile and the stated 30.7% market gap.
Trade?
If you’re moving Herbert, you should be getting Mendoza plus meaningful added value (pick/starting piece) to justify giving up the proven elite QB.
Superflex?
In Superflex, Herbert’s reliability is a major edge; Mendoza is only a buy if his price reflects real uncertainty about long-term starting.
See exactly what Fernando Mendoza and Justin Herbert are worth side-by-side in our Trade Calculator.
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