Yeah currently the Solana Network is better but when there are memecoins that are hype then the network can be jammed fees can be high, as happened with the $TRUMP token the solana network was jammed even though it did not die some communities complained because of the high fees due to this congestion.
The matter of Solana replacing Ethereum is still unclear because until now the MC is still far between SOL and ETH, although in terms of users, there are more active users in Solana.
that's true and i agree with you, ethereum is still the second largest after bitcoin and the possibility of solana replacing ethereum is still far away. Maybe in the next few years we can only judge whether solana can replace ethereum or not, because right now it's still too far to compare the two in terms of marketcap.
Solana overtaking Etheruem is possible but may take a longer time in near future. Solana team has been making strong effort, including marketing and some crypto "meet up", that has enhanced Sol token skyrocketing at the last few months of the Bitcoin bull run.
However, it is on records that Etheruem was once overtaken by XRP few years ago, and i think that other tokens can likewise top the number two positions at Coinmarketcap ranking.
In a nutshell, the ranking at the Coinmarketcap is not a fixed position, it is still an open position for other projects.