I haven't watched it yet, but I'm 90% sure this movie will be inaccurate. A gorilla's penis is smaller than a human's.
Well, if this is that one from the other thread, then that place looked like some sort of lab, probably doing genetic research. The gorilla acted like it had enhanced intelligence.
If you suddenly became aware that you were larger than a human in all areas except the dick, wouldn't changing that be one of your priorities?
I didn't like the sequel for the sole reason it just starts off with a total bonerkiller