Correct. Bitcoin has been the best performer in the longer term picture and that will always continue with how altcoins just don't have much to thrive on other than hype.
Ethereum's price exactly one year ago was $280 while it currently hovers around the $200 level (it even slightly dipped below $200). It's pretty bad if you can't book any sort of growth long term speaking. Bitcoin's price exactly one year ago was around $4100 which means that its price has gone up with 50% based on today's price of $6200!
Once again clear evidence for altcoin noobs that Bitcoin is the only way to go in the long term gains.