Catholicism - Is the TULIP Formula more or less true? (Semantics)

Catholic convert here. It is of my understanding that the differences between the Calvinist and Catholic predestination theology is mostly a game of semantics, and I was curious to see other opinions on this, and hope for correction if I am gravely incorrect. I read this a while ago - http://www.cin.org/users/james/files/tulip.htm Putting aside Catholic distinctions of mortal/venial sin (which the Eastern Catholics reject the distinction between mortal and venial sin while not contradicting "latin" theology, and is thus also a valid position in Catholicism) and losing your state of grace and getting back into a state of grace, is TULIP not more or less true? If the grace of final perseverance for the elect is a grace we cannot merit and is given freely by God to the elect and God predestines us based on the foreknowledge of our acceptance of Christ and there is nothing we can do to merit this gift of faith either, is this not just double predestination? This is what I mean by it being a game of semantics. Different vocab and formula to arrive at the same conclusion. Thoughts appreciated.