I recently traded a Tron and wound up with BSD and Spider-man. I would do that again in a heartbeat but I really miss Tron, if that makes sense..
Anyway, I would compare BSD to IM in the sense that you have simple but difficult goals. With a lot of One more game sessions.TRON is similar but much less brutal, IMO.
SM has a nice ruleset with various strategies/ decisions that you are presented within the gameplay. I really like how I can attack it several different ways. It can be set up fast and mean too if you don't want marathon games.
If I had Tron back and someone offered me the same deal I would do it again in a heartbeat. That said, I would also trade my BSD + cash for Tron without hesitation.
Tron would pair up with either game well but I would probably lean toward Tron and SM.
Hope all of that at least kind of helps