Glaring inconsistency between HTC 8X Review and WP8 Review. Verge Please Address!

OK so if we look at the HTC 8X review, we see that the performance score is 9.

If we then look at the WP8 review, we see that the performance score is 8.

But hang on a second, the phone used to review WP8 is 8X which above scored 9. So why is there this inconsistency? Can someone from Verge address this?