Tales of Graces new info (longest Tales game ever?)

[g-value]

tehsage said:
Didn't Tales of Symphonia claim to have 80+ hours of gameplay?

-checks back of the box-

"Over 80 hours of gameplay in this epic, emotionally charged storyline."

Now they're claiming to have the longest tales game be ~70 hours?

O_o;

Does it really matter?