Significantly more LSS. You can do a similar line with either, particularly a fresh Roc, by throwing hyzer with a little flip up, but that's the beauty of the disc, you throw it flat, it flies straight through a bit more than half the flight then fades reliably and fairly hard, but not all at once. Similar to a Predator, but shorter. When I want that specific flight, I find it more predictable to throw a Sent than try to manipulate a Roc. I can do it, but why not let the disc do the work? That is, even if a Roc gets me that flight 9 out of 10, when it counts, why wouldn't I use the disc that does it 10 out of 10?
Don't get me wrong, the Roc is my workhorse, so the Sent only comes out once or twice a round usually. I also use it occasionally for tricky flex shots, but I tend to use a Zone or a Pred-like disc for those shots more often than not.