The Swarm was a very different experience from any B&M Invert I've been on, which have all been very similar. It's like also comparing it to B&M Floorless and B&M Loopers, chuck in the fliers while you're at it? Hey, that drop was vertical, add in the Dive Machines too?
You wouldn't compare, say, Baco with Volcano would you?
The ride plays on the wider trains and hang-time in a way that an invert never could. It's more flowing and graceful, more poised and deliberate in a way an invert never could be. Likewise, you could never produce the fast, snappy, violent movements you get on rides like Nemesis and Inferno. In essence, you could never put a wing rider train on an invert layout, or an invert train on a wing rider layout (if you inverted the tracks of course) and get the same ride, or even a ride that would work in the slightest.
Hence, they can't really be compared.