Too big and too expensive; don't know the exact price but it's quite a bit higher than the Honda, innit?
Japanese like to copy and even copy each other.
Honda introduced the CBR250R, the CRF250L and M to match Kawasaki's Ninja 250, KLX250 and the D-Tracker.
Then they introduced the three CB500 twins, smaller and cheaper than the three Kawasaki 650 twins, but again a faired, a naked and an adventure style.
Now they introduced a naked and a faired 650Four that beat Kawasaki's Ninja 650 with two more cylinders and more power.
My guess is that eventually Honda will come out with a 650Four adventure style and Kawasaki will build an affordable 650Four with around 85 hp.