Oh, yeah, story-wise he's as valid an option as any of them.
I just meant that if DC is going to take the time to make a list of possible suspects, why wouldn't they stick with that? If not, why bother at all? Maybe to be playful? I think they said "prime" suspect, which could open the door for Superman Prime.
The list is interesting, at any rate, as most of them aren't names that were getting tossed around by fans that much, and some of them seem ridiculous. (Bizarro and Martian Manhunter?)