Right. Prehistoric cro-magnon man was not identical to modern man, but then again, neither are any two groups of modern man in general, even today.
They weren't "monkeys"; they were the same damn species. If you want to compare the differences between our common ancestor with the other primates, and with cro-magnon, you will find that cro-magnon man is far, far, far more than "half-way" between. They'd be almost indistinguishable from us, just as a rainforest tribe isolated from the rest of humanity for 10,000 years more-or-less is.
The fact of the matter is that "cro-magnon" isn't even a scientific classification, and is just used to refer to the earliest modern humans living in Europe.
In fact, I believe that cro-magnon man were still considered the same subspecies as modern man is; other subspecies of Homo Sapiens go back over 100,000 years further in the past.
Seriously, like Ampersand said, you really ought to look this stuff up before you talk. We have enough people saying things without any real background knowledge working for them, and it's difficult enough to separate wheat from chaff; if you're going to bother talking about something like this, you could at least do everyone else the courtesy of trying to be informed. And if someone corrects you on something, you should maybe bother looking it up to see if it's true for yourself instead of just blindly contradicting it.