The rabbit's and squirrel I've had were very different types of meat, but both "red", so I'd guess the same result would come of eating only either of them. In another thread I posted about "SAS Survival Guide" being an excellent book. In it he teaches all the types of things there are to eat in the woods. "other than ignorance of it being there, there is no excuse for starvation in the woods with the bounty that's all around you.". He teaches about things to eat all over the world, anytime of year, that'll keep you alive long term. I really believe ANYBODY could survive ED's situation with enough mental fortitude, and that book.
There's so much to learn and remember in there you (or at least I) need to re-read it once a year or so. Gonna start through it again this weekend.