Should I be able to push 6.3?

Mystical_fury1

So I have just finished 6.2.6 champion after 3 revives and instantly pushed 6.3 but quickly realized how big of a roadblock the medusa boss was. I tried going with my only 6 stars who were sunspot hood spiderham diablo rhulk ibom or mysterio, but none of them dealed bleed damage. I recently got nick fury who is amazing at bleeds but still and r2 nick could not kill medusa since i kept getting random damage taken and random stuns. Today I got insane luck and duped my spiderham got photon galan silver surfer iceman and colossus. I don't think any of these champs deal bleed except nick so I kind of don't know what to do. Any tips or ways I could finish this encounter easily?

Nightheart

6.3 onwards it gets much easier till you reach Grandmaster there your skills will be put to the test. However, a warning in advance 6.3.6 has cap iw boss with surging vengeance destructive feedback and you can only damage him through critical hits just know he might give you a hard time if you are not prepared.

winterthur

I used NF. Had to revive but got it done.

ahmynuts

R2 6* nick fury is more than enough to handle it. We didn't even have rank 3s when the pre nerfed version of that fight dropped