Besides, a big honking scope with tons of magnification is next to useless on an airsoft gun, even a highly upgraded one. I run a 4-12 X 50mm on my Tanaka M700 AICS and I almost never take it off the lowest setting - since you're shooting at such a close range (100m and under), when you use a huge zoom and your target moves even a foot or two, he's completely out of the reticle.
Whoever told you airsoft scopes aren't good is a moron. There are quite a few that are just as good as low-end "real" scopes. I use chinese knockoffs on 2 of my real-steel rifles, and there's an excellent review on 1337tactical.com on chinese scopes on Tikka tactical rifles shooting .223 and .338WM:
http://www.1337tactical.com/shop/newsview.php?infoId=4