User blog comment:Krufix/Tanks for all the Fish/@comment-24087642-20140602081153/@comment-15244341-20140602102738

Swain isn't a damage sponge because he is squishy as hell if you don't stack resistances+health and if you do you basically deal zero damage, so you will be ignored. As Xerav said, you get a health item or two, Zhonya's and then proceed to eat some burst and activate Zhonya's till your cooldowns are up. Same with Vlad. Blow cooldowns->pool->blow cooldowns->Zhonya's->bloww cooldowns.

He can't sponge damage like Mundo, Garen or Alistair do. Not by any strech of imagination.