exp chart for all bosses/superuniques?

yes

87%

pls

Is there a question?

since that post was a question, i guess the answer to it is 'yes'

6000

Your xp gain differentiates in too many ways to have a chart, it would take a lot of dedication to calculate every of those results

What affects xp:
Players in game,
Level,
If you kill alone or with other players ( exp sharing ),
Items giving %exp

Ex: you can kill andy with 6 players in game while having only 2 players in catacombs at level 65 and it will give a specific amount of exp, change any of those values just by 1 and you get a whole new amount of exp.

this

No