Torb’s redesign didn’t change a huge portion of his kit though - he still has one turret. He’s always had one turret. He can still armor up, just only himself and not his whole team, and it’s stronger now. His ultimate even got an upgrade going from just his turret being stronger for a bit to him being able to spew molten lava everywhere and instakill people with it.
Symmetra no longer has half her turrets. They take longer to deploy. They do less damage overall than they used to, the slow effect has been nerfed so it no longer stacks when it used to. She lost her proton barrier, the only thing that let her survive a fight with her own skill rather than being just lucky or propped up by her team. She lost her shield generator and her teleporter that let you come from spawn, making it actually useful because it spanned a significant distance rather than it being the 25m limited piece of crap it is now. edit: Oh yeah and they turned her primary weapon into an absolute crapfest, because it went from being actually useful to the most stupid gun in the game.
And she ‘gained’ the ability to slowly have her turrets waft gently in the breeze to very meticulously unfurl and then get blown up by chip damage before doing any damage themselves -_- and a giant wall that lasts a few seconds. Woop-de-do.
Torb didn’t lose nearly as much as he gained. Symmetra lost so much more than she ‘gained’, and what she ‘gained’ isn’t that great.