Fujitora is a rat and nothing he does works properly for the WG.
The SSG was used just against Boa (maybe because she is stronger with her hax) and they failed. They didn't capture anyone. They are strong? Sure. Did they manage to fulfil their mission? Nope.
Dozens if not hundreds/thousands of marines died as fodders while fighting Buggy, Croc, Mihawk and Boa. On panel half a dozen ships sank because of BB, Croc and Daz bones.
Letting Sabo escape let to revs getting a fresh restart and more and more countries are rebelling. Since they hate the WG and nobles, they are ground for more anti-marine propaganda and bounty hunters. This is because:
Marines are now being hunted like pirates. They can't even trust civilians anymore. Worse, what sane person will even think of joining the marines after this fiasco? Specially since Akainu seem to be a disciple of zach brannigan and thinks that enemies are like killbots and will shut down after killing enough soldiers.
Fujitora does not deserve to be a admiral and is just a undercover rev. No one could be this incompetent by mistake.