Quote: This was under the Kurt Busiek/George Perez run. I remember Busiek saying that he was bulletproof. He clearly seemed to be powered down for Busiek's run, but how exactly was he bulletproof? Did he get shot and hit by bullets or something? While he did seem to be powered down, he was also able to take down and defeat (And almost kill.) The Presence (A villain who gave The Defenders and Quasar a hard time.) and help take on The Exemplars (Who were kind -of-like mini Juggenaut's.).
Busiek always maintained he was VULNERABLE to bullets (even though its nonsensical).
In other runs he's seen shrugging off bullets fired from Fighter Jets.
Busiek concocted some weird idiocy that Thor has many different vulnerabilities/durabilities so Thor was vulnerable to a normal human with a knife or a gun but capable of withstanding nukes, punches from the Hulk (and worse) and existing in the middle of the sun*.
*Personally this feat always was stupid though.
I think that he showed Thor to have samer vulnerable as WW, as both could take massive blows, nukes, etc but skin could be pierced by shard and dense fast moving projectiles.