The Seattle has noticeably worse turret angles than the Seattle. Worse enough that it bothered me where I don't think the Seattle's t9 heal offsets the nerf to the turret angles over the Cleveland. I sold my Seattle the moment I got the Worcester unlocked. She's not a keeper, imo.
The Worcester, however, is a keeper. I may prefer the Worcester to the Des Moines now, and I love playing the Des Moines. I am definitely gonna perma-camo my Worcester when I get the doubloons for it.
I also don't think the T10 Atlanta comparison isn't the best. To me the Worcester feels like a Super-Cleveland with her better DPM, better max range (16.7km vs 15.7km), a heal, and AA that doesn't really need DFAA but gets it anyways.