Learn Turkish: Ha sen söyledin ha ben, netice farksız. - Whether you said it or I did, the outcome is no different.

Structures like -ip -mediği are used for indirect questions meaning 'whether or not' an action happened. The ha X ha Y structure is specifically a correlative conjunction of indifference. It means 'It makes absolutely no difference if X or Y happens.' Here, it emphasizes that you saying it and me saying it yield the exact same result.

Why isn't there a verb after ben in the second part of the clause?

When the verb is the exact same in both parts of a parallel structure, Turkish often drops the second one to avoid repetition, just like in English. The full phrase would be ha ben söyledim, but omitting söyledim is much more natural and common in everyday speech.

Could I say netice aynı instead of netice farksız?

Yes, netice aynı (the result is the same) works perfectly and means the same thing. However, farksız (literally 'difference-less') pairs beautifully with the ha ... ha ... structure, because the whole point of the sentence is to emphasize the lack of difference between the two options.

Why is there no 'to be' verb ending like -dır on the word farksız?