From the site http://www.bbc.co.uk/science/humanbody/sleep/sheep/

A sheep's run seems to be 0.3 seconds from start to finish, so each band is worth 0.043 of a second.

I used the E-330 and E-5 with focus locked on the computer screen, then got the reaction test going and saved the best 4 (of 5) shots each time. One test was with my eyes on the camera's LCD. The other test was with my eyes on the computer screen, shortcutting around any delay caused by the cameras' LCD screen refresh.

In both cameras, it is marginally better to use the LCD to frame the scene — but use your eyes off-camera to get timing cues from the real action. The E-330, with no mirror dance (due to its dual-sensor design) is marginally faster in both LV tests than the E-5 — but at least they are  close.

The final test was with the OVF of both cameras, which were about equal.

This is not a "real world" test. In real-life action, you'd have to deal with changing focus points and focal lengths... but at least you would get some timing cues. These sheep just jump out without warning!

BTW, this is with the old 14-54. The E-330 was remarkably faster at locking focus than the E-5 — in Live View. I don't sense that the E-330 gets any faster at focusing when in OVF mode (it really is a great LV camera).

On the other hand — in OVF mode — I can't say that the E-5 is any (or much) quicker at focusing the old 14-54 than the E-330, until you get into dim light (light where you couldn't easily read a newspaper, for example). Here, the 330 falls on its face and the E-5 can still do the job.