Received XB8, should it have been XB10?

I am moving to a new house. At this address, I was advertised, and purchased, 2 Gbps symmetrical service. Xfinity Assistant says that “Your level of service is XI - NextGen MGig FDX including download speeds up to 2000 Mbps and upload speeds up to 2000 Mbps.”

However, I only received an XB8 and not an XB10 for FDX and Docsis 4.0. Should I have received an XB10? Or is it possible I live in a mid-split area even though I was advertised 2gbps symmetrical and my plan says FDX?