I don't think the circumstance where you play your four drop on turn 4 and it's immediately answered for less mana and your opponent can make use of the additional mana they saved comes up all that often. On the assumption that you're playing the Ogre in a deck that's pressuring your opponent and forcing them to make some action beforehand, they often won't have mana open to answer it on your turn, and then if they're removing it on their own turn they're only going to have 2-3 mana available for another spell anyway. So to lose out on the exchange your opponent has to have a 1-2 mana removal spell (which is not a guarantee) and have another 2-3 mana spell they want to cast that turn and deal or have dealt with creatures you presumably played turns 1-3. I'm not saying it never happens, but I don't think a four drop getting Doom Bladed or Swords is as huge a blowout as is being made out.
What if instead of Ogre Battledriver you consider Hero of Bladehold. They're the same mana cost and have the same necessity of untapping, but I don't think anyone is arguing that Hero is underpowered.
What if instead of Ogre Battledriver you consider Hero of Bladehold. They're the same mana cost and have the same necessity of untapping, but I don't think anyone is arguing that Hero is underpowered.