Once again, going to echo MrsDizzyD, this is a logical fallacy, in that it is a non-sequitor.
#1: You’re still assuming it’s a miracle, which is not necessarily true.
#2: In order for your statement to be true, Rome would have had to have received this sort of miracle prior to the Schism, and then lost it afterwards. To my knowledge, this sort of miracle was never recorded in Rome.
#3: You’re ignoring the fact that many miracles are tied to specific places, such as Lourdes. As I said in my first post, if this is miraculous, I imagine it would keep happening if that Parish converted to Eastern Rite Catholicism.
#4: You’re sort of cherry picking proofs. There are plenty of other proofs to show that Orthodoxy is not the religion Christ founded; not least of which is their division, which flies in the face of Christ’s explicit command for unity. You can make a case for almost any religion being the correct one if you only base it on one or two supposed miracles / teachings. What you have to do is step back and look at all of their claims as a whole. When you do that, Orthodoxy just doesn’t stand up.