Well yes, but OpenVPN has many dozens of different options and my experience with it is that it's a pain in the ass to get the right set of options (on both the client and server) which result in minimal latency and maximum throughput.

But you're quite right that if you already have a config that you know works, WireGuard has no significant advantage in this area (in terms of ease-of-configuration -- though the keys being quite short is nice for SSH-like key distribution). But if you're starting from scratch then you need to first figure out what is the right configuration to use (or you need to pick from the many dozens of "set up OpenVPN quickly" scripts) and then you need to hope that your configuration is not insecure.

WireGuard can be set up and work just as well as any other configuration without a script in a couple of minutes (or less than a minute with a script). The script that was linked in a sister comment to "set up OpenVPN quickly" also sets up Apache for god's sake...