Moreno at least has been trying to win his entire tenure. Trying to win is much more valuable than what Jerry has been doing imo.
That said, obviously John Fisher is worse than Jerry. He doesn't spend any money or try to win, he actively forces stars out of town, he tanked the team and stadium in Oakland so he could move the team to Vegas who doesn't even want a team, and he's now playing in Sacramento in a minor league sham of a stadium. He basically ran a public hate-campaign against Oakland and their fans. At least Jerry has the respect to hate us mostly in private.
Jerry has had periods where he invested to win.
While the A's have had some nice seasons, it's been in spite of Fisher.