Except... you aren't comparing cheaters (cos, you know, it's also possible to actually CHAET in ED and, due to the P2P nature and no server oversight, have infinite shields / ammo / etc). While they might definitely exist in ED, the nature of the game means they aren't really affecting the game as much as those cheaters in Overwatch, so it's a far smaller problem (there's also far less of these people, percentage wise). I'm also not entirely sure what the penalties for actual cheaters in ED are. I'd wager those who get caught (recorded, verified) might get a ban?
Anyway, what you're actually trying to compare are "leavers" - people who "leave" ED or Overwatch when they shouldn't. And when you realise that's what you're comparing then your comparison no longer makes sense. Leavers in Overwatch DO get the proverbial slap on the wrist (even in competitive, where the penalty is harshest, it's a temporary ban from competitive only).
So, again... do you really want to compare ED to Overwatch? Your only argument is based solely on semantics - "Frontier called combat logging a cheat, so everyone doing that is a cheater!" Except, no, they're "exploiters" at worst (and even then I'm not so sure). You know - just because someone decides to call a "banana" a "yellow cigar" doesn't mean you can start smoking bananas.