You're just comparing stats, which means nothing.
Its like the gearscore vs Skill arguement, just because one has better stats, does not make them better. A good Panth will jump in and ruin any remaining enemies with his heartseeker strike (usually at the end of a team fight, when everyone is weak)
A good Jax can tank any Physical DPS until the casters catch up, and get out with hardly a scratch, or push harder with a stun ruining counters. He also hits harder the more he hits, so if he can get into melee range, you are dead unless you run faster or hit harder.