In theory the BT is an exact copy of the register, but mistakes happened: bits got missed out, or occasionally it seems that a few extra words of explanation may have been added. Where there is any doubt about an entry, it's always a good idea to try to look at both if possible.
The original BTs for Guiseley (as it would have been at that date, even though the registers are separate) are at the Borthwick Institute in York. Those for Yorkshire were filmed by the LDS and used as the basis for the IGI; the films can be ordered in and viewed at LDS family history centres, but other libraries and archives also sometimes have copies. It might be worth contacting Leeds Central Library or the WYAS Leeds branch to see if they have them; the Yorkshire Archaeological Society might also be worth a try.
If you can't get to any of those, another option would be the LDS's free reproduction service, whereby they will copy an entry from one of their films and send it to you by email. There is more information on this at
https://familysearch.org/learn/wiki/en/Photoduplication_ServicesArthur
