Very true, though it depends on what Zaslav defines as a disappointment. Perhaps they don't interfere with Superman: Legacy because Superman is a safe bet and it's a big hit. So we're good there.
But what if these tax write offs continue and one of them is a DCU project that sounds promising? Or a creator Gunn and Safran try to get ducks out because they don't want their work to get shelved?
Now maybe it won't come to that, but what reason is there to trust Zaslav and Co at this point?