They look essentially the same: Once you sleeve em up, things are good
One of the big reasons why Sultai Mutate scored so low in so many categories is that the deck is built around a brand new mechanic that doesn't have any support from the past 25 years of Magic , which limits the number of good on-theme reprints and even keeps many of the most powerful mutate cards out of the deck since Wizards presumably wanted to save them for Ikoria proper
Whether he's the commander of an Infect deck or an alternate win condition in a Dragons deck, four infect per turn is too slow on its own
The ability to turn all your creatures into dorks is just so powerful
While today, we expect reprints on a yearly or even monthly basis, and much of the player base clamors for more reprints of in-demand staples, at the time, the idea of a high-supply reprint set was completely new
It's legendary so you can build around it, and its White's answer to Goblin Welder effects which tap to sacrifice an artifact to recur one