A Cub's stall speed is about 33 knots or 38 mph dirty. That's just about half the speed of the Cirrus. Injuries likely? Yes. But, a chance to live another day is possible depending on the many variables acting upon the a/c at impact.
The Cirrus pilot would have had to put the nose down if he lost an engine in order to maintain airspeed. The prospect of eventually immediately flying into trees as one tries to maintain control is an awful option in 'trying' to keep a bird flying.
Out of air, out of time, out of envelope.
Self correction: a/c was a 421, not a Cirrus as stated.