A question regarding "normal" drum triggers and interfaces

Yes, definitely. If they can send MIDI to SP, then you can use them in the software to do all kinds of things. There’s a Pad Input type that is specifically for these kinds of MIDI devices - triggers, SPDs, etc. Pad Inputs | Sensory Percussion 2 Help

And, yes, SP2 can be used to control Superior Drummer. We have a template available to help with that, too. You can read more about that here: Sensory Percussion 2 to Superior Drummer 3 Template with Cymbals - #24 by Aka_Wayne