It and Ancient of War read the same way but one gets buffed whereas the other one transforms. Silence only works on the buffed one.
Makes players wonder how a new card works before we get to test it in-game, such as Anodized Robo Cub which was released during GvG. You can't tell right away if it transforms or buffs itself.
Druid of the Flame reads differently than Druid of the Claw, yet they work the exact same way. Ease of parsability of the card has been cited as one of the reasons Druid of the Claw is still the way it is today.
They may go back later on and change Druid of the Claw to read like Druid of the Flame for the sake of consistency, but it does sacrifice the parsability of the card.
They felt like choice cards should be between two comparable things to keep it easier to understand.
There was a card in early development which was "Choose One: Change a minion's attack to 0 for a turn, or deal 2 damage to a minion who attacked last turn".
Some inconsistencies with how a card works vs the text is actually just bugs which will be fixed in upcoming patches.