Both Kirk and Moreno had portions of their career where they were noodle bats, and each of them has had stretches where they are high average hitters with power.
Kirk's first 544 plate appearances in MLB saw him produce a 139 wRC+ and hit 21 home runs. He hit the ball hard with regularity with an average exit velocity of 92.1 MPH and a hard hit rate of 46%. This is the type of upside he has displayed against major league pitching. If he returns to any semblance of this he is going to extremely valuable factoring in his gold glove nomination worthy defense behind the plate. Unfortunately he stopped squaring up the baseball almost completely in the second half of 2022, and the next 633 plate appearances aren't nearly as noteworthy. He has slumped to a 94 wRC+, hit only 10 home runs while slapping the ball around with an average exit velocity of 87.9 MPH.
It's far from determined what type of hitter Moreno is going to be moving forward. We can definitely state he's going to gun a bunch of runners down when behind the plate, but we simply don't know how his framing is going to look in the future. He had a hot streak to end the regular season which carried into the first few playoff rounds, but leading up to this he spent several seasons of play as a singles hitter who hit a ton of ground balls, seldomly walked, and hit for very little power. For the final 3 playoff rounds he did very little with the bat more akin to how he looked prior to his hot streak. I'd love if we could go back in time and avoid the broken hand that seemed to completely sap his power, but what is done is done.