Yuan is 4000+, plus nearly five years in Paradisa. Canon is inexact.
Wizardmon is...who the hell knows. He's never given anything remotely like a canonical age, we have no idea what the lifespan of a Digimon is or how long it takes them to reach maturity when not in the presence of a Digidestined, and there are differences in the rate of time passage between the Digiworld and the Material World, so not only does canon not say anything, but there really isn't a reliable way to estimate. I play him as if he's 1-200 years old.
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Wizardmon is...who the hell knows. He's never given anything remotely like a canonical age, we have no idea what the lifespan of a Digimon is or how long it takes them to reach maturity when not in the presence of a Digidestined, and there are differences in the rate of time passage between the Digiworld and the Material World, so not only does canon not say anything, but there really isn't a reliable way to estimate. I play him as if he's 1-200 years old.