Jacobs is light years better than Booker. Booker can be solid behind a good line and does seem to have some pep in his step this year but Jacobs, although not the homerun speed, is showing elite vision and efficiency and seems to get the maximum out of every run that he is physically able to.
I agree he's not in that elite tier really but a super dependable low end RB1 that earns a lot of yards based on his talent.
As a major homer and Jacobs owner I wouldn't give him up for Terry and a 1st although it's a super fair offer but for the same reason I'd say don't give up Terry as a WFT homer. I mean how many productive fantasy options are there on that team? Hold him and enjoy the best of both worlds. Rooting for your real and fantasy team.