An always trusted game review source is Eurogamer, also because they don't give a score that could stoke a review score shit show as we often see them nowadays:
"Fun fighting marred by an underwhelming package"
http://www.eurogamer.net/articles/2017-06-02-tekken-7-review
Here are also some points you might want to consider before buying:
- Four less characters than Tekken 6, tons less characters than TTT2
- Story mode is short and only features a fraction of the characters
- Arcade mode only lasts five fights and no character endings
- Character episodes last one fight with endings that solve nothing
- No Time Attack mode
- No Survival mode
- No Team Battle mode
- No replays
- No tutorial system
- No in-game frame data.
- Much less customization options than Tekken 6. Many shared items across all characters
- Long load times on console
- Poor image quality on base PS4 and Xbox One.