I was trying to work all the implications, but I kind didn't manage. It's a headache lol. I won't display the base Saiyans numbers, just the Saiyans', Piccolo's and the humans' (plus Gero).
Yamcha 25,000,000
Tenshinhan 35,000,000
Kuririn 50,000,000
Son Gohan 80,000,000
Suppressed Piccolo 165,000,000
Gero 200,000,000
Gero (+Yamcha) 225,000,000
Gero (+Vegeta's blast) 285,000,000
Gero (+suppressed Piccolo) 450,000,000
Piccolo (true power) 525,000,000
Vegeta SSJ 660,000,000
Gero (+supp Piccolo and humans/Gohan--hypothetical or absorbing suppressed Piccolo again) 615,000,000 --> still not quite on Vegeta's level but still close enough to pull off a vcitory through absorptions.
I feel suppressed Piccolo should be around the sum of Gohan, Kuririn and Tenshinhan's powers, considering Gero's conclusion about how he'd compare to Vegeta was the same whether he absorbed suppressed Piccolo again, or added the rest of the Z senshi's powers.
The higher problem is that Gero seems pretty low on the list (I have Namek Goku at 250,000,000)... I mean, post Yamcha Gero still lower than Namek Goku? Ehh. But I can't fit all those implications if I put Gero pre absorptions where I normally would (at SSJ Trunks' level).