Yes, there are various modifiers in there.
First of all the base attack numbers you see in the game are multiplied by your character's stats already. So if you're seeing 900, you probably have a character with 150% magic power. These numbers are the base versions, unadjusted by anything.
Secondly, for the casting speeds, these are the base versions for a casting speed of 1 on a scale of 1-10. If you'll recall, we "took out" casting speeds a while back, but what we really did was hide it and set everyone's casting speeds to 0.5. Just in case we wanted to bring that back, which I don't think we do.
Anyhow, so all of the numbers you are seeing there are the literal raw values from in the game, unadjusted for anything for any character, and you can use them to look at their powers relative to each other. You can NOT use them to look at the values compared to what you see in the game itself, of course. Too many possible modifiers there.