See, in reason you can route the signal from anywhere to anywhere else, it all runs on the same buffer size. Other sequencers can run channels with pre-delay to do the computations and mix it in after.
Your CPU is not the only thing having to work to get audio processing done, just use the reason DSP meter to see how reason fares, use Logics meter to see how logic fares and don't make the mistake of comparing it.
If you started doing your first DSP coding experiments you'd quickly come to see why and how Reason is different.
Plugin latency issues? Phasing on parallel channels? Want to know the real latency of your audio interface? Try the VMG-01!
Professional Audio Engineer at Theater Bremen, Germany • Part Time Programmer