From running a service with 50-100k concurrently active connections on a single VPS on OVH that has shrugged off a lot of attempted DOS attacks over multiple years, I have the impression that OVH handles DOS attacks exceptionally well. Specifically I've never seen it drop (a lot) of legitimate traffic.
In comparison to OVH, Hetzner (which this game seems to be using), is utter garbage when it comes to responding to any kind of incident well, or at least predictably. Their responses range from doing absolutely nothing, to nullrouting you, to terminating your service. With OVH I at least know how they'll respond to various things and they're (with few exceptions) professional about it, even if I don't like it.
I'd say you get what you pay for, but OVH (when comparing dedicated servers) aren't much more expensive.
OVH has consistently been filtering legitimate traffic for us each time we tried them and we’ve tried almost every tier of service they offer.
Mind you, this is a process using a single port, with only around 100 active connections. You'll easily see half if not more lose connection during a DDoS attack.