Could you please upload the corresponding file here?
Dear User,
If you want to compare the results of 2 files you need to use identical inputs for both the files. The dead & live loadings in the files are completely different. Please make sure you use the same load for both the files. On the other hand, reactions due to only gravity load (DL & LL generally) will not be the same for load combinations with lateral loads like seismic or wind as there will be tension, compression situation in the columns.
No, that is not the correct idea. Due to lateral loadings there will be tension and compression in structure. Depending upon your combinations and loading pattern the columns subjected to compression will give higher reaction and columns subjected to tension will give lower reactions.