Recently Justin Sun of Tron said that Tron is much better than Ethereum and listed 7 reasons. Vitalik responded that Tron was also better in terms of copying. One reason Justin Sun listed is transaction speed. For me, his comparison is funny.
Ethereum is mineable and Tron is not. It is generally true that transaction speed of mineable coins is much slower than those of not mineable. The reason is simple: not mineable coins are faster because they are not mined and they are just "issued" or released. Due to this reason, it is also generally true that not mineable coins are centralized or at least much much more centralized. One selling point of cryptocurrency is decentralization, but the not mineable coins are generally centralized. For me, if a coin is used as currency, it should be decentralized. Otherwise, why not just use fiat money? Some people say that not all cryptocurrecies are used as currency. This is true. That's why we see a lot of cryptos aimed at different applications. For instance, NEO, Vechain, Iota, Ripple etc. These coins or tokens may be good (some of them I like very much), but they should be treated as something in between decentralization and centralization. It does not make any sense to compare the two in terms of speed because it is also universally true that centralized system has higher efficiency. To put it another way, if you only pursue speed, just use centralized system and many applications don't need to be done by cryptocurrecy.
By the way, some people attack Charlie Lee of litecoin for selling all his LTCs. I don't see that's a problem. Even if he was the co-founder of LTC, his litecoins were mined by himself one by one. What about these centralized coins or tokens like Tron? The co-founders just allocate a lot coins or tokens to themselves and become rich. If they sell all their coins or tokens, that might be a problem.