I think it's a matter of perception.
- One could say that we're physically different, and run away with that
- One could say we're emotionally different (how we handle situations) , and run away with that
- One could say we're different in the way we intellectually operate, and run away with that
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- One could say we all display the same emotions (hate, love, anger, etc), and run away with that
- One could say our bodies operate the same (for the most part), and run away with that
- One could say both sexes have shown to display the others distinct emotional characteristics, and run away with that
- One could say that society and culture play a large part in our differences, and run away with that
It depends if you're willing to focus on the differences or similarities. It depends if the opposing side is adamant or ambivalent of their opinion. It doesn't really do any good to argue if one side is focusing only on the differences, and the other only on the similarities. You won't find common ground that way. They're both similar and dissimilar, this much is a fact.
It's up to you to decide whether that makes them different, as pointed out, even males vary from another. But obviously, you would say we're different from a gorilla, so it's totally up to you to decide where you draw the line. Is it majority rules (differences being greater than all the equivalents, and vice versa), or
how much different one feature is? Depends on the person I guess.
As for my opinion, I think we're the same.