Originally you asked for evidence that the basic form of the Mass was the same today as in apostolic and post-apostolic times. I furnished that evidence. Now you have gone off on another tack about sacrifices of the Old Law. 
Rome did not invent the Sacrifice of the Mass. Here we are talking about Christ's offering of Himself to the Father for the sins of the world.  He made that offering on the Cross on Calvary. At the Last Supper He made that offering sacramentally and bade his apostles to perpetuate it throughout time which the Church has done faithfully since then.
I don't see what Rome forbidding Christian worship or not differentiating it from Judaism has got to do with the basic form of the Mass? The early Christians celebrated the Mass regardless of whether it was legal or not or whether the Romans knew the difference between Christianity and Judaism