@Kuromukuroo I wish I could check them for myself but I've heard that Wraith was top of the list for a number of different stats, at all levels, for every season until now. Theoretically you can balance Legends despite different sizes but if she truly dominated at every level for multiple seasons then she wasn't balanced. Yeah scrubs were crying about her like they'll whine about anything but that doesn't mean she was or wasn't OP. I don't care about their complaints and honestly challenge anything I find questionable.
If a character requires a HIGHER level of skill to beat than any other then that's a major problem unless they have a massive weakness to balance it out. I don't need better aim to take on a Caustic or Bloodhound but I do against a Wraith? I'd be fine with that if her abilities were absolute crap but they weren't.
To me the simplest way of settling this would be seeing if she had a higher encounter win rate or whatever else the devs claimed but I don't know how to find those stats.