All I know is this:
Jesus was tempted, but he never once gave into that temptation. praise God.
Adam Was perfect when he was made and His nature was not evil at all, It became evil once he gave into temptation.
Lucifer was not evil at all until he turned against God.
I believe Jesus could have given into temptation but simply didn't. I believe that because of Jesus we don't have to give into temptation anymore if we rely on Him like He relied on His Father.
Theres a difference between Lucifer and Adam and Jesus.
Jesus flesh was like Adams but His nature in His will and effections
were pure God.
I understand how your thinking that because it says He was tempted
than that has to mean He could have sinned.
It also says somewhere that He understands us because He went through it.
Many say that implies that He wouldnt know otherwise. But thats a big
mistake, and far from true.So we have to be careful taking one verse or a few
and make a determination. And not expect anthropomorphic language.
But most of all we miss seeing God as He is tabernacling with us as promised
and beholding the Glory.
So to that other verse id say its like this
Jesus was tempted...but God cannot be tempted, so therefore He couldnt sin.
Theres a few places in the bible that says dont tempt God.
That surely doesnt have to mean He can be tempted.