I have never used a webOS device (TouchPad) but sounds like it handles auto-corrections in a better way.
My biggest problem with text input on iOS is its flaky autocorrection. I’m regularly typing words iOS doesn’t auto-correct properly, so I need a simple, quick way to revert autocorrection. iOS doesn’t have that. webOS does. Simply hit delete after webOS corrects something. Rather than deleting the last character, this undoes the autocorrection. Boom. Done.
Please Steal These webOS Features by Lukas Mathis.