I've seen several people on HN say that VNC can be just as good as RDP but I've never found that to be true myself, would you say H264 make a significant differ

I've seen several people on HN say that VNC can be just as good as RDP but I've never found that to be true myself, would you say H264 make a significant difference? Is there anything else that makes VNC closer to RDP? Any recommendation for Windows server?