I don't particularly like Farrell (although I've never met him), and I don't like Saracens, but I think we're going overboard here.
He's basically been given a 10 match ban. That would usually be 2-3 months.
It's then been reduced to 5 matches.
A few years ago when our own Ashley Johnson badly mistimed a tackle at a kick off and upended Dave Kearney with a horrible high tackle, he was banned for 6 weeks, reduced to 3, and only got a yellow in the game itself
They are different incidents, and my bias against Farrell makes me feel like his is far worse. However his ban is over 50% longer than Johnson's was so maybe the panel have come to a roughly consistent conclusion and have punished Farrell comparatively severely