On my scroll on the last screen where it tells exp to advance it says this:

Current experience:: 1089275

but when I click on myself in game to see my stats I have 452k

Obviously those are totally different numbers. Which is right? Am I to assume that other players are this far off too?

your current experience is all the exp you have ever gained... the number you see when you click on your name is the exp you have at that time.

i believe when you sac a creature your exp value goes down when you click your name but stays the same on your current exp

I didn't realize you lost exp for saccing, thanks

Also, the creature xp gained per fight is lower than the player xp gained. And this difference becomes larger if you have a lot of heat.