Jefe Bergenstein
Legend
Depends what his strength is.
Quite true. I guess I just assumed if he's a fighter and using a non-finesse weapon, he probably has a decent strength, so AC is comparable.
Basically the point is, he is a little too MAD, and won't be as survivable as a pure melee combatant (Fighter or Paladin) despite his damage.
Oh definitely. His saves will be a point or two lower in some places and his HP will be a couple behind on average per level (tertiary con). I was just saying he's not super squishy like a wizard.
Also the wording of Agonizing Blast is a bit curious. The trigger is "When you cast eldritch blast, add your Charisma modifier to the damage it deals on a hit". You could argue that this is only one flat +cha bonus when you cast the spell, instead of per blast. Honestly though I get a different answer in my head every time I read it, but I feel that this is more in line with other cantrips and class abilities (potent spell, for example).
I guess you could lawyer it up that way if you want, but I think the general consensus is the "on a hit" is the main issue, and since it hits multiple times, applies multiple times. The "when you cast" differentiates it from some other method of generating eldritch blast (magic item, scroll, giant robot that shoots eldritch blast).
I really feel that eldritch blast and agonizing blast (and Hex) are where a bulk of the warlock's power comes from, so uch that they should have just been class features (maybe allowing bladelock abilities as alternate features). Given their low number of spells, they get quickly reduced to spamming cantrips assuming multiple fights between short rests, and non-eldritch blast cantrip damage really kind of scales poorly.