How do you say "I already can tell (understand) X"?


I want to say the equivalent of

> I can already tell (understand) that game X is (going to be) harder than
> game Y.

For instance, I've already beat game Y. And even though I've only just started
playing game X, I can already tell it is going to be harder than game Y.
That's what I'm trying to convey in a sense.

I know that to say "game X is harder than game Y" you would say:

> ゲームXのほうがゲームYより難しいです。

But I'm unsure how to add on "I already know/understand/can tell that.."

My best guess is something like:

> ゲームXのほうがゲームYより難しいともうわかった。

But I'm not sure if that is right or if there is a better way to say it.




I don't really like xの方がyより in this order.  
I would rather say it like

> ゲームXはゲームYより難しいのはもうわかっている。

or

> ゲームYよりゲームXの方が難しいのはもうわかっている。




I don't really like xの方がyより in this order.  
I would rather say it like

> ゲームXはゲームYより難しいのはもうわかっている。

or

> ゲームYよりゲームXの方が難しいのはもうわかっている。

