Ethereum and BNB are platforms that both have very high liquidity and sales volume in the crypto market, so these two altcoins are the best investments besides BTC at the moment, but I am very optimistic that ETH is the best altcoin that has good opportunities in the future, due to its popularity. higher than BNB.
ethereum is more reliable than bnb, although bnb smart chain becomes very useful when ethereum gas fees increase a lot in the past bull run, But still there's no way bnb can take over ethereum place especially right now that they published the new system which the 2.0.
And if there's a potential for bnb to reach $4000 after 4 years? @OP. well let's see, infact bnb has a good technology aswell, maybe there's a potential..
I think 4 years is too far, $4000 will be reach in the next year i think. In 4 years i think BNB will be worth more than that, my prediction it will be worth more than $10k or even more than $20k. About ETH, i agree with you ETH is like the pioneer for any other altcoins.