No it can't. It is possible to do but the process requires a using a fair bit of code to create a logo/watermark then using a cutom script to write the logo/watermark, the results are not good unless a background to the logo is used. It does take a fair bit of time to do each one though, so it's not something I would persue or spend time developing.
Here's one example, cr2 to jpg and text added, done in Bridge only!
thanks Paul Riggot