It's possible, but until now bitcoin has dominated more price increases than altcoins, but there are good altcoins and have a bright future whose prices are rising rapidly, namely Litecoin
Thats nornal bro . bitcoin is automatically consider as the highest gainer in every single year because btc value is pretty high when compare to other coins (altcoins ) .
what the op means here is that if the year 2019 will be a good year for altcoins to experience a price recovery or an increase and id say that yes it is . since we start the year 2019 ive been seeing lots of positive signs ( signs if growth for alts ) up until now . so i believe that they will end the year with a better prices compare to last year .