Zero is frequently #1, no matter what his defense is … and since he is such a popular target, he uses himself as a testbed to rate new tanks for effectiveness…often when he doesn’t actually expect the hero to be great as a tank.
But as for the OP’s question: My theory on giving emblems to heroes in general is to take my best heroes and make them better, not to try to improve upon the middle of my roster.
So if Justice is your best tank, she will be better at 80+20 than she is at 80. A paladin’s protect is one of the most effective talents for a tank, so it will definitely help her.
Will 80+20 Justice be better than Delilah at 80 as a tank? Maybe. Better than Guin at 80 as a tank? I really doubt it. Better than either Delilah or Guin at 80+20? Very doubtful.
Some slow heroes are already very good / usable.
- Apparently Alby is utterly amazing on offense. (I don’t have him; I can’t confirm that), but on a defense team he’s more of a low odds annoyance than a serious threat to me.
- Yunan is still a MEAN tank, arguably one of the best in the game and he’s slow.
- I’d love to have Elena for titans, or Isarnia for titans and raiding, even if neither would likely make my defense team.
If a hero in my roster doesn’t seem worth the mats for their final ascension TO ME, I cannot imagine how they would be worth giving emblems…and depending on your roster, the number of slow mana heroes who make that cut will vary quite a bit.