Right, re-applicants come from a pool of only people who were rejected from every school, so naturally they would have a lower acceptance rate compared to the general applicant pool.
A lot of people on here say that being a re-applicant is worse and to avoid it. When pressed, they gave vague explanations of why but none of it seems to be based on anything. I've yet to hear a good argument that shows having the "re-applicant" status makes it harder for you to get in correcting for all other variables. People will say "oh its cause adcoms know you failed the first time so you need to prove to them you've improved those areas". But if you apply with different essays and added EC's, you're essentially applying again and "trying it a different way". I havn't heard anyone with authority say this hurts you. (I would believe it more if one of our resident adcoms, or even a med student who does interviews, would comment).
Now, if you applied and didn't get in, then send in the same app, you didn't not get in because you were a "re-applicant" you didn't get in because you didn't have the credentials to get in, just like the first time.