There is nothing realistic about this Riddler. Nothing more so then the guy who leaves riddles in a suit. He wears a trash bag for Godsake. If he wore a green suit, it would be less realistic? How?
What about crafting your own equipment that is going to save you from bullets, grapple and do other such things "more realistic" then getting military grade stuff? More over, Bruce crafted plenty of his stuff in Begins. He also got hurt and wounded throught TDKT. So much so, he was physically broken 18 months into it. Seems fairly realistic in comparison.
You believe it will be based 100% on realism, say there isn't anything unrealistic in the trailers, and it's just not true. It's an attempt to confirm something through saying it's that way. That's why to try and build up to the word REALISTIC you use buzz words like grounded, gritty, dark, street-level. Which beyond most of those applying to not only Nolan but Burton's take, it still doesn't make it "more realistic".