Things Tekken does better than (most if not all) other fighters:
1. Best Netcode
2. Bigger Movelists than any other fighter, which means more animations and more hard work. Which further makes you appreciate the netcode even more.
3. Wider variety of characters, huge roster with a lot of diversity in the cast.
4. Hits are so damn satisfying to land and character expressions are phenomenal.
You can just imagine Anna's "aa-aah" and Lili's scream as the move hits.
5. Tremendous, mind-blowing Depth.
6. BEST music without a doubt. Customizable music to your liking.
7. BEST ending movies. So much comedic craziness. The team took it
this far.
8. Female characters don't get the vagina tax (Capcom) or don't become sex objects (Team Ninja).
9. A lot better balanced than mostly all other fighters. Tier lists don't mean much at all.
Level of skill overrides everything else. No gimmicks. Nothing that can't be overcome with time and practice.
10. Extremely content heavy. Extremely.
11. Best fan service in the industry.
12. Amazing DLC practices.
13. Online ranking match cheaters actually get punished.
14. Only fighter with a free dedicated site that has stat-tracking, team formation, team discussions, etc.
15. Excellent clothing/customization options (T6 >>>>>> TTT2 but still......)
I think there are various other things that can be noted too. People can say it's subjective but we all know Tekken Tag 2 is the best fighter released this generation.