Perhaps Oomis’s doctor meant that using Silvadine would help reduce pain in the long term. But, since Oomis understood it as immediate, it worked via a combination of placebo effect and vasaline effect.
The difference I see between silvadine and bacitracin is that Bacitracin is thicker (I think this is the difference between an ointment and a cream). The thicker ointment keeps it covered better but also does not let it breathe as well. Silvadine is also easier to spread on the painful skin because it isn’t as thick.