Mountain Buster became "more powerful than intended" in the last version update. However, this power upgrade was not unbalanced. It put Titan on the list of top physical damage dealer avatars, alongside Garuda, Ifrit, and Ramuh.
Summoner hasn't seen more powerful blood pacts than Predator Claws/Flaming Crush/Chaotic Strike/Merit blood pacts at all since the level cap increase started. I'm sure most jobs have gotten abilities stronger than what they had before, but the three new blood pact rage abilities still don't live up to to the level 70 and 75 rage pacts of the six sleeping gods.
So, Summoner was accidentally empowered. Titan became a consistent and strong physical DD avatar. And since I don't have Geocrush fully merited, it was a delight to make use of Titan. Thank you for pointing out that he was stronger so I was able to briefly enjoy it. Unless there is something devastatingly broken and secret that was fixed, ~2200 damage from Mountain Buster isn't that much more than 1400~2000 from Chaotic Strike, Flaming Crush, and Predator Claws on the same enemies. After all, it's level 90. Shouldn't we have something new that is more powerful than what we had at 70/75? And I'd love to see the avatar physical DD tiers shaken up, with Titan, Leviathan, and Shiva equaling or surpassing the big three, and Fenrir at least making somewhat of a comeback. I just think it's fun to use other avatars sometimes.
So why the Titan hate? He's a cutie. Can I use him?
And before anyone brings up magic pots and skeletons and Titan being so good against them, try out Chaotic Strike and Flaming Crush on them, which are superior blunt damage. Mountain Buster is not up to par.