The definition of Titan doesn't help your argument one bit. Especially when you get the full definition (a titan is someone who is god-like, or powerful and influential in a certain field) instead of your biased one. So whether you like it or not, Titan tends to convey the idea of power. And Titans aren't tanks? Maybe in your imagination. Clearly in plenty of Grimoire and Armour pieces it conveys the idea that Titans are the powerhouse of the three classes i.e. the tank. They also come with the highest base armour statistic. But instead you use Master Chief and the majority of they're grenades as a weak comparison to base your argument upon, whilst ignoring the fact that technically speaking all of the grenades are tactical in their own way. Besides, those to say Titans can't be both tanks and tactical? And as Mr. Fruit said, arguing over it will get us nowhere. There are a plethora of statistics which back up the fact that Titans are the most underpowered Crucible Class in Destiny. Why you bother refuting facts is beyond me.