http://www.emu.edu/pphs/prevet/
According to this website, which was updated in 09, the average accepted pre-vet GPA is 3.55.
The average GRE score is 81st percentile in VR and 77th in quantitative reasoning.
Average accepted MCAT is between 31 and 32, with a 31 being the 79th-84th percentile. Overall GPA was a 3.66 for matriculants in 2008.
So,
assuming the MCAT and GRE are taken by the same distribution of students, getting into vet school is not harder, though one might debate how much easier it is.
I can't seem to find the percentage accepted to vet school, but I recall that it is about the same, if not a little higher, than med school. According to this yahoo answers page it is about 50%
http://answers.yahoo.com/question/index?qid=20070412073849AAAWtNt
Wikipedia and this advising site cites it at 46%, about the same for pre-med
http://www.psu.edu/dus/anvet.htm