Although human and baby gorillas are indeed very similar in their development stages, it is interesting to note that gorillas do tend to mature more quickly than humans do. For example, gorillas usually learn to crawl at about two months and learn to walk at nine months, while humans are still learning to sit up at around 6 months and then walking at about 1 year. Also, female gorillas reach "puberty" between the ages of 10 and 12, and male gorillas reach this maturity between 11 and 13 years, while for humans it can range from ages 10 to 18.
All in all, baby gorillas are very similar to human babies in most aspects. They are also just as cute! Here is a video that is kind of cheesy but has some great footage and insight about how the gorilla mother cares for her baby.