These are all good points.

But ultimately exchanges will follow the community consensus and market value when determining what to list. Tron & Sun have enough resources to win a value battle in the short-term, but perhaps not in the long-term.

Migrating to STEEMTRON will take time and effort. Meanwhile, there will be demand to trade STEEM, which is already supported by exchanges with no extra effort. If there's considerable contention and splitting of market value between the chains, exchanges will list both with STEEM having a head start. I agree which chain retains the name "Steem" is more iffy.