TWD is on the downslide and GoT is still going strong.
I'm in the UK so I'm not entirely sure but don't a lot more people have the channel that TWD is on and GoT is on some premium channel?
http://uproxx.com/tv/game-of-thrones-walking-dead-ratings/
Across all legal platforms more people are watching GoT
However, ratings for the season premiere of The Walking Dead are somewhat misleading. It was after the season premiere that the AMC series began losing viewers. The series lost 5 million overnight viewers after that first episode and never regained them. Week 2 fell to 12 million viewers. Overnight ratings are also misleading, however, because The Walking Dead regularly added a few million more viewers on DVR throughout the week. In fact, for the season, The Walking Dead average around 15.5 million viewers a week after live ratings and DVR were accounted for.
However, 15.5 million viewers (TWD) is less than the 16 million viewers Game of Thrones scored in its season premiere, and those ratings are for the first day of viewers (and they don’t even include the 130,000 people who downloaded Game of Thrones illegally). As noted by Variety, weekly viewership on all platforms reached 25 million viewers last season, and given that this season’s premiere of Game of Thrones doubled the overnight ratings of last season’s premiere, it’s safe to say that weekly viewership will most certainly reach 25 million or more viewers again this season, which is significantly more than the 15.5 million viewers The Walking Dead averaged in its 7th season. Moreover, ratings for The Walking Dead are on the decline, while ratings for Game of Thrones are increasing as it nears the end of the series.
In short, for all intents and purposes, The Walking Dead is no longer the highest rated show on cable. That title belongs to the HBO series now, and Game of Thrones is not likely to relinquish the crown again until it goes off the air, at which point The Walking Dead will be in its 9th season and may ultimately find itself competing with Game of Thrones’ spin-offs for highest rated show on cable, assuming of course that Damon Lindelof’s Watchmen, Westworld, or Better Call Saul don’t squeeze past a declining The Walking Deadin upcoming years.
Did you even bother reading the article you just posted? It's 100% speculation. I posted the actual data, you posted an opinion article. Look at the links I posted above that show the totals for each season.
Game of Thrones on it's best day can't compete with the success The Walking Dead has had. Walking Dead Season 7 is one of the *WORST* Seasons it's had in years and it still did better on average than Game of Thrones. The only episode of GOT that beat out a Walking Dead episode was the season finale.
Compare the finales of the last few seasons:
Game of Thrones season 5 finale: 8 million viewers
The Walking Dead season 5 finale: 16 million viewers
Game of Thrones season 6 finale: 9 million viewers
The Walking Dead season 6 finale: 14 million viewers
Game of Thrones season 7 finale: 12 million viewers
The Walking Dead season 7 finale: 11.3 million viewers
There Game of Thrones "FINALLY" has surpassed a single episode of The Walking Dead, but, the averages for the seasons?
Nielsen media research shows Game of Thrones season 7 average 10.2 million viewers.
Nielsen media research shows The Walking Dead season 7 average 11.3 million viewers.
Check this out....
Game of Thrones Season 7 most viewed episode: 12 million viewers.
The Walking Dead Season 7 most viewed episode: 17 million viewers.
It is undeniable that The Walking Dead is bigger, all the empirical data shows it as well. Game of Thrones at its biggest, most successful is still millions shy of even touching an average / successful TWD season. The only time it's gotten close is in Season 7 where The Walking Dead has had some of it's worst numbers yet, yet, still manages to beat Game of Thrones.