(I know this is ages ago, but I haven't been on Hubski for a while, and I hope you don't mind me replying still). You completely misunderstood me. I'm talking about people as individuals. We aren't a hive mind; we have behavior sets distinct to each and every person. And if you're going to argue that way about religion, then I'd say what if aliens had no concept of religion at all? That we wouldn't meet an extremely secular and scientific race where all beliefs are defined by empirical data? I could argue the same thing. It's how an outsider would look at things, not you as a human sees everything. Your view is just as "humanly" biased as mine is.
And they would realize that we were sentient. Math is the universal language, and even if they see our work in that field as elementary and basic, it's still evidence of intellect.If there are humans who have trouble telling members of another human race apart, as Europeans in various parts of the world do with Asians and vice-versa, then I doubt that alien observers would be sensitive to "how different we all are."