now you're just being pedantically picky without contributing to the discussion. for the uninitiated in the audience. Rinzler has 4 dots on his chest because they see him the most. Tron is seen in a flashback for what? 4-5 seconds and even then he's moving a lot so most wouldn't pick up on it.
I already KNEW rinzler was tron. I know the 4 dots are a nod to the classic tron costume from the first movie. sheesh, move along.
Tron has the four dots on his chest in the First movie. Big time.
The first time I spotted them and no one else had them I knew it was Tron.
I think it was just subtle enough that only those that remember the four dots would get it right off.