I'm just not seeing it now. I was initially, but to me the evidence mounts the more you look at it. I think there was a "plan" in place here all the same (plan used loosely because we know how DC is with their planning these days). That plan being for the ultimate end result to be essentially the equivalent of the pre-Crisis status quo of Earth One Superman/Earth Two Superman. Only difference being they'll probably operate in the same Earth. Which I think is superfluous, but just judiging from their leanings it will all be on Earth-0. The precedent has been set in the past and I think that's what they're going for in the end. Fans have noticed for some time now the unique divide within the fandom considering the more drastic differences between different incarnations of Superman that don't really exist with a lot of other characters. I'm thinking DC noticed it finally as well. Hell it might not even be something they're just now coming to the conclusion of, as past evidence shows they wanted to do something like this before Flashpoint as well when they introduced Earth-22 Superman to the main verse. An older Superman with the JSA, and a younger Superman with the JLA. Indeed its no coincidence to me that this is happening when the classic JSA returning to the New 52 world is just around the corner.
The only reason they're "killing off" the New 52 Superman instead of just jumping right into the new status quo is because they want to give the New 52 version his own boost (though I think its rather unnecessary and gimmicky, but I guess that's the point of a cheap boost). The old Superman is staying, I have no doubt about that. But it will be in conjunction with New 52 Superman, not the replacement scenario they're touting right now.