Bitcoin has indeed performed well, very far more than any other crypto currency asset that has ever been created, but this is not or should not be a surprise, I personally would have been surprised if Bitcoin, being the frontier in the crypto space allowed itself to be overthrown by another crypto asset.
Aside Bitcoin being one with the most market capitalization and highest in rank, Bitcoin I think also is the most safe and reliable crypto asset to invest in, it is one with the most volume on almost all exchanges.