No, it is not a matter of "some would say". The reason that scientists came up with that particular definition of evidence is so that one could objectively say whether an observation is evidence or not. You only have to ask yourself two questions. First is the concept a testable concept. That means is there a test, based upon the idea's own merits, that could refute it if it is wrong. In the case of evolution the answer is yes. There are quite a few tests that could show it to be wrong. The second is "Does this observation support (or oppose for evidence against) the theory?" . And again the answer is yes.
Scientific evidence has that definition to keep scientists honest because they are people too and can make the same sort of errors that you make.
So, one more time. Are those skulls evidence for evolution?
EDIT: No faith needed. Calling it faith is a personal attack against scientists and one that you would have to prove. That was technically a violation of the Ninth Commandment on your part. Not necessarily lying, but definitely bearing false witness against your neighbor.