Appears to be the same Model Gateway XB8-T

I was in my Xfinity App trying to get assistance with buffering issues, when I saw that I was due for an equipment upgrade. I agreed to the upgrade and when I received the new gateway it was a model XB8-T (noted on the back), the same model I already have installed, but when I check the my current equipment in the Xfinity App says it's an XB-8. I'm confused.

I don't want to go through with installing the gateway if this is the same model inside and out. Can someone advise me if they really are the same gateways?