I have played for a very long Tekken and what i can say from the experience: Tekken 6 is a decent game but not the best.

Tekken 6 has allot to offer but it lacks various of things like the scenario mode in the PS3/Xbox 360 versions. Personnaly i think they couldve putted something like the scenario mode in the PSP version. For the graphics they've done a great job by making very detailed characters, the story is good but not the best i've ever seen.
The characters are the best characters i've ever seen in the Tekken series, you can play easy with every character, it's fun to that every character has a different fighting style. For the gameplay i can only say one word: AWESOME!, it's easy to get used to, and very addictive gameplay. There's again a customization mode although this one has more things to fully customise i personally think the previous 1 is better.

Greets, diabloNL11