Add to that the fact you will need a 4 ship of JSF to drop the same payload
It is no longer about payload, its about accuracy - look up Small Diameter Bomb.
To have a 'current capability' involving F111 you need to have serviceability, operability and penetration - it struggles with all three!
100 a/c dos not mean 100 combat ready knucks
The JSF (NACC) program is looking at ways to achieve a valid manning ratio - fast jets in the RAAF have never been manned appropriately; this will be especially so with an incoming AAR capability. Crews are generally the limiting factor, not aircraft.