A hit and a bomb are the two extremes.
Tangled as of now is a possible mediocre affair. It cost 260 million to make according to sources (how I just don't see but that is what they claim and get it from the studios) and has made 143 plus million to date, and will likely wrap up under 200 million regardless. Overseas combined with the domestic will make it a moderate profiting affair since after home sales, music, and most importantly merchandise for princess loving girls and fans. Something Tron does not have in comparison. They have tried to merch Tron but it does not compete with Princess things.
Let's look at it this way, Tangled is nowhere near as attended as Enchanted yet and that was considered a money maker, but not a hit. Not to mention the Enchanted budget was much smaller thus enchancing the gross.
So what does that make Tron Legacy from the looks of it?
Also, the box office discussion is relevant because duds, and breaking even films don't get made into theme park attractions. Classic stories and hit franchises do.