Pet hate counts just the same as any other hate and Titan can make plenty, just Rouse+Spur and send him in. I'd say leave him on Obey so he doesn't waste time using the defensive skill or the stun (which doesn't have an enmity bonus).
It's not as much as a PLD or WAR, but more than enough. Bonus points for mobs that like to inflict status effects because Rouse will prevent most of them (fucking Alectryon.....).
I especially like SMN+Titan for Bonnacon since pets aren't susceptible to stuff like Hysteria, so while half the people there are running around like headless chickens he'll still be pounding away.
It's also good for people that have lag issues in general since Titan's doing all the work automatically.