Chaosmancer
Legend
Hm. While this is true to an extent, would we be saying the same thing if Pact Blade made as many attacks as Eldritch Blast?
Like, lets pretend for a moment that Pact Blade gave you a longbow and extra attacks at 11 and 17 instead of Lifedrinker. Same damage, better range. Would people suddenly not be saying that E.B. wasn't worth taking, because you could have a magic item that massively improved your accuracy and damage over eldritch blast?
But you aren't getting the same damage and better range. Longbows are d8, Edritch Blast is d10. Longbow is 150 ft, Eldritch Blast is 120 ft, which is technically shorter, but really that difference rarely comes up.
Most tables do give out items. So, the overwhelming majority of Blade Pacts will have magical damage, even if its just in the form of a +1 sword. Its worth considering that the availability of magic items innately and irrevocably imbalances any comparison between the two options. Couple that with the fact that your pact weapon might actually be a sentient weapon that serves as your patron... maybe the fundamental problem that needs to be addressed is Pact Blades' relationship to magic items before we can actually balance it with EB.
Two things.
1) Why should magic be more powerful than melee, just to make up for magic weapons? Especially since magical items for spellcasters exist?
2) Magic items for spellcasters exist.
I know someone said earlier that magical weapons are more common than Pact Rods.... but that is in part because weapon users are more common than warlocks. And even a pact of the blade warlock wants a Pact Rod, because it increases spell DC's and gives back a spell slot.
And while we could assume that a Pact Blade warlock gets a magical +1 sword that gives them equal damage to the EB using PAct of the Tome Warlock... we could also find that a Pact Blade Warlock got a magical vicious sword that only does extra damage on a crit and the Pact of the Tome got a Pact Rod that gives them +1 attack and saves as well as restores a spell slot. After all, the DMG tells us that the Rod is uncommon, while the vicious weapon is rare, so the PAct Blade warlock is getting the more powerful item... right? It would actually be more fair to give the Tomelock the +2 Pact Rod.
Finally... magic items should be rewards. Magic items should make you more powerful than expected. Players shouldn't be in this situation where the math of the game is balanced assuming one type of character gets magic items and the other doesn't, because that isn't how things work in practice.