His goal is to convince the exchanges (Hes friends with CZ) that Steem is indeed moving to TRON. Thats where the fight will be had.
Exchanges run on the current chain and they would have to move and drop the current steem chain for the new one.
It all depends on what Justin manages to convince them and what the witnesses decide.

STEEMTRON isnt Steem. Its a completely different thing. What ever happens.... witnesses deciding to kill the chain or us forking away Steemit.inc stake or simply moving on and ignoring it, Steem will never be the same.