Tons. In general Home Assistant has better/more support for cloud integrations.
One specific example I use - Hubitat doesn't support integration with Arlo cameras. Home Assistant does.
But it is more than unsupported devices. Some people prefer to do rules in webcore or a text based script/rule engine. You can do that in Home Assistant/Node-Red, but you can't in Hubitat. But simple rules are easier to make in Hubitat.
Or, I'll have 10 devices in Hubitat that I want to trigger from a cloud integration in Home Assistant. So I do the logic in Hubitat as that is where the majority of the devices are.
Home Assistant can support listening on a UDP port for unsolicited messages (like from weather stations), Hubitat doesn't.
Each tool is better/worse at different things.