In my opinion the better route preventing injury would be focusing on one lift a day. Recovery would be a bit better since you are only training 7 days every two weeks. Which for some could mean better strength gains as well. I think that starts getting into the realm of your “training age”, experience, and recovery ability.
If you were to do full body every second day you would indeed accumulate more volume over the same 7 training days. I think the chance of injury goes up as I imagine you will be squatting at all of those 7 days instead of only 2 of them. For people with great recovery (technically solid novice lifters, and people who just are generally lucky to have the ability to recover quickly) this could reap great benefits for strength. Also allows more practice with the lifts. Even advanced lifters could gain from this but not for very long, as you would hit peak strength much more quickly and probably need to adjust your TM.
I think the advantage depends on what your short term and long term goals are, as well as what you are capable of handling.
This is all my opinion of course, I have never actually done full body training as I have never felt the need and have made great progress following 4 day a week or 2 day a week programming. I hope to try running a full body program for my next powerlifting meet just to see how it works out.