Toomas makes a very good point, but I think that accleration also depends on which diff. is in the car. I would be surprised if the e28 is really geared taller than the e34, particularly if we're talking about US models. Anybody have a late model e28 535i owners manual handy?
I've never figured out why, really, the dual mass fly was used in the e34. It was supposedly intended to smooth out a "rough idle" condition in the M30, but I never had that problem and I'm not sure how many people did.
I've driven e34s which have had the dual mass fly wheel replaced with a normal fly wheel out of an e28, and they really do rev a lot more freely.
1989 325iX 5spd Coupe Koni Adjustable/H&R
1989 535i 5spd Bilstein Sports/H&R, Tri-Flo, Conforti, UUC SSK
"If it isn't Diamondschwartz, it isn't... Dark Grey?"