Most of the ones in there I haven't even heard of. But Ripple could easily outperform BTC in my opinion.
Only for a short time maybe. Altcoins can't compete against bitcoin in the long run. If you are after quick pump and dumps, any altcoin could outperform bitcoin. If you extend the time frame to like 4-5 years, bitcoin will always outperform anything else because its competitors will either go scam, vanish or people will just lose their interest in them.
Agreed, bitcoin can't be out performed by any of the altcoins. Bitcoin is the only asset that can be trusted to be valued even after years. The same can't be expected with altcoins. An example is the 2017 bull market, those cryptocurrencies that grew much high compared to the present could've showed some high level of growth along with the bitcoin. This is where bitcoin and altcoins differ. If I were asked to pick five altcoins my choice will be ethereum, ada, chainlink, eos, bittorrent.