I played Batman Arkham Asylum and a lot of Arkham City on Hard Mode and didn't feel challenged. I am not a big gamer so I don't think that is the reason.
With Arkham Asylum I didn't have a tough time at all except for 3 parts(the 1st is because I didn't understand what was going on). The 1st being The Stealth section where if you knock anyone out or are seen, the captives are killed, The 2nd was the corridor before the 2 brutes right near the end. The 3rd was The area with the 2 brutes.
Did anyone other than me find these games to be to easy?