I see what you’re saying and I don’t find it as an insult.

It’s not that we don’t want to look like we’re not Catholic, it’s because there truly is a different understanding, no matter how much people would like to spin it. I, too, would like to see unity, but I want it to be a true unity. I would hate for it to be something like many of the Protestants are doing, such as “You believe in Jesus? Me, too!” In doing so they forsake other aspects of their credence.
Many times, I hear Catholics say “Oh, you believe Mary is sinless. That means you believe in the Immaculate Conception. You believe it, but you just don’t know it!” That to me is ridiculous. Catholics get excited and start saying unity is just around the bend, because from their perspective we’re on the same level. However, one cannot look at Holy Orthodoxy from any other lens then that of Holy Orthodoxy. Else, it is wishful thinking and illusions. There is a different understanding. I get annoyed when Orthodox do the same thing. You cannot judge Catholicism fairly through the lens of another, as Mardukm pointed out.
I could not reconcile post-schism Western beliefs with Eastern beliefs, which is why I chose to become Orthodoxy. It took a while for the schism to take place and it will take time to heal. All in God’s time. His will be done!
In Christ,
Andrew