That assumes a two word guess is the only objective. (And, yes, that's luck.) But wins in the 3, 4, 5 turn category are pretty common absent a lack of luck.
That said, it's probably easier than it looks at first glance and given a decent vocabulary and some sense for word and word pair frequencies in different positions you'll probably finish at 6 turns or less unless you really go down a bad path.
I realized just last week that I had been playing in hard mode without knowing it. I had definitely had some games where I was almost had it but there were a lot of options.
I really am finding new layers to this game. I play hard mode, and when entering my initial guess, I try to put common letters in uncommon positions. I'd much rather get a bunch of yellows than a bunch of greens at this stage.
That said, it's probably easier than it looks at first glance and given a decent vocabulary and some sense for word and word pair frequencies in different positions you'll probably finish at 6 turns or less unless you really go down a bad path.