IntoTheVoidPersonally, I would be using them as a ski that would be used for a lot of slashing, tree skiing, pillow lines and some cliffs. I like to go fast and really want something that wont falter in the chop. Seems like the bents might be the better option for me.
jeffs will outperform bents in chop by a considerable margin. They weigh something like 500gr more a ski, which is a world of difference in chop - just massive. There is no secret sauce in the Bent's construction to negate their relative lack of mass. I would 1000% go for the damp construction and increased weight of the Jeffs over BC120s for skiing chop, or hell, any resort riding (unless all you do is ski untracked, super dry / light powder).
To be honest - I do not understand why so many people ski BC120s as their resort pow skis. I am sure that they are fun, light, poppy and easy to spin with - but their lack of mass make you do all of the work soaking up skied out snow or trying to punch through variable. A balanced / progressively mounted ski like the Jeff will be nearly as easy to play around on, but will ski difficult snow a whole lot better simply by being heavier and having a damper construction. The denser / wetter the snow become the bigger the difference. That is not to say that the BC120 is not a great ski, but keep in mind that most of the pro skiers you see on them are so far beyond us mere mortals that they are basically doing a different sport than us, and could do it on snowlerblades.
The more apt comparison would be between a Bent and Jeff118tour - they should be fairly similar and variations of the same type of ski. I would assume that BC120s might be a bit stronger on piste (due to their cores) while the Jeff118tour should be a tab bit looser and damper.