With all those new and shiny Projects, which outperform BTC in every aspect, I think it could be quite hard, but I am not sure, so I created this poll 
you said it yourself, they are "shiny" projects 
in other words they are mostly hot air and when you look under the hood you can see that they are either exactly the same as bitcoin (like the bitcoin copies) or they are weaker versions of bitcoin (like the copies that introduced some weakness into their copy by foolishly changing things they shouldn't have) or they are different versions that have different and in most cases serious flaws.
in any case I am also very interested to hear what altcoin you think is "outperforming" bitcoin?
RadixDLT for example. There are a few more, but that would be my best bet. (although the mainnet hasn´t launched yet, but it will in 2019)