I already pointed out the major flaw of that theory in the previous discussion thread, but I had to close it because the new chapter was out and couldn't reply.
The hints you talk about for your theory are, as I said, extremely confusing, contradictory, vague and very ambiguous and as a result can be interpreted in a multitude of ways, but you act like they are simple, straightforward statements that have only one, clear interpretation. So yes you are interpreting what you want to see as yes you can easily make a dozen theories about these hints. I just sucked one out of my thumb on the spot, that I got the genders wrong is irrelevant as you can make scenario after scenario because of the simple fact that the info is so vague and as a result open to hell of a lot of interpretation.
We now pathetically little about this matter and we know zero to nothing about what happened 400 years ago, which is vital to understanding this all.
I mean you talk about it being two sides of the same coin, but that's not true. You are reasoning in circles. You assume that Natsu has to be END and then you start seeing all these hints that way, disregarding the many other options. You even contradict yourself as Zeref said something that it END or Natsu could meet him, not both. That is a big flaw in this theory as why the division? Zeref says that Natsu is the only one that can beat him and he said Natsu isn't up to the task yet, but then lets him have a contest with his strongest demon? If they were one, why the division? Natsu should then be ridiculously powerful if they would be one entity with END, so it would be in Zeref's best interest if he wants to kick the bucket to make them join together. No instead he is seemingly trying to cause a rift. This is the exact opposite of two sides of the same coin as one side has to be removed, which is not possible for a coin. This is what I mean with that this hints are so vague, ambiguous and contradictory. You can make everything and nothing out of it, in fact they don't make any sense, but you keep having that narrow minded vision of that END has to be Natsu.
This ambiguity of the shallow info given even reflects in your reasoning. Natsu being END is not the most logical theory based on these hints, it's the opposite. We have so little info that is so vague and ambiguous, we can interpret it in so many ways that it's almost pointless to find something in it that make sense. The only factors that we have are Zeref, Natsu and END. Natsu being END is not the most logical theory, END and Natsu are simply the only solid factors that remain as this hints of yours are as useless as they can get and thus do not point at Natsu being END.
I mean you are even yourself randomly guessing things simply to make that theory fit, then you should also be very well aware that that pretty much applies to your entire theory.
Igneel and him are the best pair, i seriously wanted to see both of 'em having a decent chat and a little fun D: 
