New coin is hundred percent risky! The more established coin has history and you could make intelligent guesses about it's trend and your expectations. New coin is not easy to predict or speculate on as the success of new coin depend on many factors!
I do agree. It is very hard to determine whether a new coin is a good one or just one of hundreds of scam coins. One could look well on its background but it is still hard to be sure that such coin is worthy of investment. To be safe, the profile and history if a certain coin has to be taken well into consideration first.