Why is Polkadot better than Ethereum?

Why is Polkadot purportedly superior to Ethereum? Could you elaborate on this? I'm genuinely curious to understand the specific advantages Polkadot offers over the established Ethereum platform. From what I've heard, Polkadot touts itself as a cross-chain platform with scalability and interoperability at its core. But how does this translate into practical benefits? Is it in terms of transaction speed, security, or perhaps the ease of developing new blockchain applications? I'm also interested in knowing how Polkadot's governance model differs from Ethereum's, and whether this contributes to its superiority. Given the popularity and maturity of Ethereum, it's intriguing to see how a newer project like Polkadot might be challenging its position. Could you please shed some light on these points?