I compared what I believe is an XX style shield used on Tested XX knife to the shield in question. I can't draw a counterfeit / not counterfeit conclusion from this analysis. Here is what I observe:
1. The shield is either smaller than the typical shield or the lettering is larger than typical lettering.
2. I don't see any evidence of a the inner oval remaining, which seems odd given the apparent lack of wear on the letters (as Jerry zp4ja mentioned)
In the picture below on the left side I made the size of the shields equal which made the size of the letter unequal. On the right side of the picture I made the size of the lettering equal which made the size of the shields unequal.
The bottom shields on both sides of the picture is my shield with the lettering from the shield in question painted red and superimposed on top of the lettering on my shield. It is possible that my shield could be the one that it is out of whack