Bah, pure rationalizations! I am come and I came is the same thing, Blogger. Nice try. It's the past tense, not the future tense.
Oh, Bah yourself.
I am come verses I did not come
Present verses past tense
At the incarnation, his purpose for coming into the world was for salvation, not as judge.
Currently, because men reject him, they are heaping judgment on themselves.
Elsewhere (future) we see him coming as Judge.