They seem very different to me.
Regarding this card, bear in mind, no one would play a card called Fire that deals 2 damage to up to two targets nor would they play a card that calls Ice that taps a permanent and draws a card. But Fire/Ice is a longtime player in the format because of its versatility.
This card here is similar by having multiple modes and additional ones are added when piloting Oath of Druids, those being specifically "trigger Oath of Druids" and "turn imperiled Dack into Angel that protects me from the Spirit tokens I had to create."
The extra modes are what made Beast Within an MVP in Oath of Druids while I probably wouldn't run it in any other deck. This card is an upgrade in several respects (particularly CMC) but not without a few factors working against it. I think overall, it's better.