I figured somebody would ask, so I'll explain.
For starters, a score is a score. The text of the review ultimately speaks to its quality, but we have to assign scores to help give some kind of shorthand.
Comparing EA Sports UFC to NHL 15 is apples to oranges in a lot of ways. They are completely different genres, and they come loaded with way different expectations in terms of what you'll find within. EA Sports UFC was also a first effort for the franchise, whereas NHL 15 was the continuation of a brand. I understand that NHL had limited time to make the transition, but that's on EA. It's not acceptable to remove so many ways to play the game in NHL (and basic features) and just say that it's a reset for the franchise. They should've contracted a team to work on the last gen version and given more resources for NHL 15 on new hardware.
EA Sports UFC to me is a good game. Is it light on content? To an extent, yes, it is. However, the expectation for that genre (as well as a first effort) is much different. They've also created gameplay for UFC that I love, as I've logged about 500 online matches. Could the career mode be better? Yes. Could it have more modes (PRIDE, etc.)? Yeah, it could.
FIFA 14 and Madden 25 made the transition properly. Were they perfect? No, but they generally did right by the brand. NHL did not. On top of that, they alienated many users and waged a very poor
PR campaign to hide a great deal of the details.
I guess what I'm saying is that I enjoyed -- and continue to enjoy -- EA Sports UFC, and my expectations were adjusted for a game that was the first in a series. NHL is not in that situation, and it's judged by different criteria.
I didn't just "join the negative hype train" in order to slag on NHL. I respect the dev team (as said in my review, etc.), and I love the series. I didn't want to give a score like that, but the game is just missing so much that it's impossible to turn a blind eye. UFC got the score it did because the gameplay and presentation stand taller in a one-on-one game. Everything is reviewed in context.