How likely is it I'm related to these people?

Question:

How likely is it I'm related to these people?

I've read on a genealogy page that I'm:
-A 27th great-grandson of William the Conquerer
-A 34th great-grandson of Charlemagne
-A 33th great-grandson of Robert the Bruce

I am 100% sure I am related to royalty, but I don't know if the site is to trust or not.

Best Answer - Chosen by Asker: One of the facts about genealogy is that MANY people are far more interested in "prestige" or 12 trillion names in a database, than being accurate. A good number of British nobility lines are disputed, and you will find bad research in DAR records, as well as the LDS church files.
You COULD be related to these persons. My friendly advice is to check out some of the how to articles, such as those for becoming a certified genealogist. Even if that is not your goal, it really helps to understand the reasons behind SOLID documentation.
I would MUCH rather have 5 generations of absolutely solid work, than 30 generations that are questionable.