Bitcoin-qt doesn't let you send to invalid addresses and AFAIK never did. The last chars of every address are a verification checksum.
https://en.bitcoin.it/wiki/Address#Addresses_are_case_sensitive_and_exact
If litecoin-qt allows it, then litecoin-qt is broken
Now an advice: Spread FUD only about your scamcoin.
LOL Okay, so each of our coins is a scamcoin LOOOOOOOLZ. Mmmk!
Anyways, I client is borken.
Nice to see you're still saying in the OP that Bitcoin-qt has the same problem as Litecoin-qt when it clearly isn't true.
FUDster...
Oh, I apologize. It didn't even bother to do so. Pls luf me again!