Kryptor and Signify, which is more secure to signing files?

Hi, new user here. When i browse the whonix.org , i see they use Signify to signing them iso, and i know it is a minimalist signing files tool that only support Ed25519 from Kicksecure wiki, and i see PG recommend Kryptor to signing files, i want to know which is more secure to signing, and why(beacuse more minimalist? or use stronger encryption?)?