My ''FPSSJ3 theory'' experiment

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ANCIENT PAST
Kid Buu- 200
South Kai- 180
Dai Kai- 150
Buffed Buu- 380 (Kid + South)
Fat Buu- 150 (access only to Dai's power)

PRESENT
SSJ2 Goku/Majin Vegeta- 100
SSJ2 Kid Gohan- 80
SSJ2 Teen Gohan- 60 (40% of Fat Buu)
Fat Buu (initial)- 85
Fat Buu (powered up)- 115
Fat Buu (max)- 150
SSJ3 Goku 40%- 160
Gotenks pre- 105
SSJ Gotenks pre- 140 (could ''somehow'' beat Fat Buu)
Fat Buu (final rage before splitting)- 230 (Buffed Buu's power hindered by Dai Kai/ Buffed - Dai)
Good Buu- 95 (temporary being)
Grey Buu- 135 (temporary being)
Super Buu (initial)- 230 (sum of his particles)
Super Buu (Piccolo's estimations)- 170
Gotenks post- 156
SSJ Gotenks post- 208
Super Buu (max)- 300 (Buffed Buu's power less hindered)
SSJ3 Gotenks- 312
Ultimate Gohan- 375
Kid Buu- 200
SSJ3 Goku 50%- 200
Mister Buu- 170 (Dai's power with some access to South's power)
SSJ3 Goku 100% (unseen)- 400 (takes one minute to charge, which is why Goku didn't count on that to beat Super Buu)