Their fear =/= actual threat.Did you miss the part where they murdered innocent pregnant women in order to exterminate the Roger bloodline ?
I think it was pretty clear there was a threat to the WG as long as someone with the blood of the Pirate King was still sailing around.
Ace being alive is the embodiment of marine failure and the Roger's will living on. Ace didn't even had to be strong, if he went around the world telling people about the One Piece it would be just as bad as when Roger did it himself during his execution.
The government cant have Roger's son sailing in freedom, and that is why he is a threat to them, and why he has that bounty.
Also I do believe that Ace could've achieved a 500M bounty based on power as well.
They simply didn't want anyone who had any links to roger alive.
Soo yea, Ace was pretty much granted the bounty due to being Roger's son.
@Bold, see my point, everything goes back to roger. What did Ace do himself to get that bounty?? I'm sure him being just second-commander in WB's fleet doesn't automatically give him a 500 mil bounty.
No events where he attacked the WG directly and so on. Luffy has already done a lot more things compared to him. So if he actually earned that bounty by doing actual threatful things like luffy and other supernovas or w.e... then Luffy's current bounty should be times more than Ace's.
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