Seeing Kalista's Rend felt like a huge huge middle finger to Twitch, honestly.
I went with the logical assumption it had to deal less damage, since it also slows AND resets on kill (and now refunds half to full of it's mana cost, too).
Well, yes, as for six attacks, Rend's base damage is lower, though I'm not sure how the 25% bonus ad per stack on Contaminate and 60% total ad on first spear with 20-30% total ad on each additional spear influence this (I don't know what ad numbers would be likely in those moments). But hey, in lane we can use this ability much more often for little to no mana, and it's gonna fly over Contaminate's damage in not too long.
Yes, different champions and everything, but was it really all that neccessary to copy this till now rather unique skill? For a champion of the same class? (That's already pissing off everyone for a totally different reason?)